Baby Not Drinking Enough Milk or Formula
Medically reviewed by Dr. Rachel Kim, MD, RDN · Pediatric Nutrition Specialist
Content reviewed against published AAP, AAP, CDC guidelines
Last reviewed:
Feeding challenges are one of the most common concerns new parents face. When it comes to baby not drinking enough milk or formula, here is what the guidelines recommend.
The short answer
Babies naturally vary in how much they drink from day to day, and a temporary dip in intake is usually not concerning as long as your baby has adequate wet diapers and continues to gain weight. Babies are remarkably good at self-regulating their intake. However, a significant and sustained drop in feeding, especially in a newborn, deserves prompt attention from your pediatrician.
Key takeaways
- Babies naturally vary in how much they drink from day to day, and a temporary dip in intake is usually not concerning as long as your baby has adequate wet diapers and continues to gain weight. Babies are remarkably good at self-regulating their intake. However, a significant and sustained drop in feeding, especially in a newborn, deserves prompt attention from your pediatrician.
- Usually normal when: Your baby drinks slightly less on some days and more on others while maintaining consistent diaper output
- Call your doctor if: Your newborn under 1 month is feeding fewer than 6 times in 24 hours or producing fewer than 6 wet diapers daily
- Varies by age — see the age-by-age breakdown below
“The AAP recommends exclusive breastfeeding for approximately 6 months after birth. Furthermore, the AAP supports continued breastfeeding, along with appropriate complementary foods introduced at about 6 months, for 2 years or beyond.”
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What Parents Should Know
According to AAP, CDC guidelines, babies naturally vary in how much they drink from day to day, and a temporary dip in intake is usually not concerning as long as your baby has adequate wet diapers and continues to gain weight. Babies are remarkably good at self-regulating their intake. However, a significant and sustained drop in feeding, especially in a newborn, deserves prompt attention from your pediatrician. At 0-2 weeks, newborns need to eat frequently, typically 8 to 12 times per day. In the first few days, volumes are tiny (colostrum comes in teaspoons), but intake increases rapidly. By day 4 or 5, most babies should be having at least 6 wet diapers and 3 to 4 stools per day. If your newborn is excessively sleepy and not waking to eat, or is feeding fewer than 8 times in 24 hours, contact your pediatrician promptly. It is generally considered normal when your baby drinks slightly less on some days and more on others while maintaining consistent diaper output. However, you should contact your pediatrician promptly if your newborn under 1 month is feeding fewer than 6 times in 24 hours or producing fewer than 6 wet diapers daily.
Normal vs. Concerning
By Age
What to expect by age
0-2 weeks
Newborns need to eat frequently, typically 8 to 12 times per day. In the first few days, volumes are tiny (colostrum comes in teaspoons), but intake increases rapidly. By day 4 or 5, most babies should be having at least 6 wet diapers and 3 to 4 stools per day. If your newborn is excessively sleepy and not waking to eat, or is feeding fewer than 8 times in 24 hours, contact your pediatrician promptly.
2 weeks - 3 months
Babies at this age typically consume 24 to 32 ounces of formula per day or nurse 8 to 12 times daily. There is wide normal variation. Some babies eat larger amounts less frequently, while others prefer smaller more frequent feeds. As long as your baby produces 6 or more wet diapers daily, has regular bowel movements, and gains weight steadily, they are likely getting enough.
3-6 months
Many babies become more efficient feeders and may nurse for shorter periods or take bottles more quickly, which can make parents worry they are not getting enough. Some babies also go through distracted phases where they are too interested in the world to focus on feeding. Offering feeds in a quiet, dimly lit room can help. Intake typically ranges from 24 to 36 ounces of formula daily.
6-12 months
As solid foods are introduced, it is normal for milk or formula intake to gradually decrease. Babies do not need the same volume of milk at 10 months as they did at 4 months if they are eating a variety of solids. Breast milk or formula should remain the primary source of nutrition until 12 months, but a reduction in volume is expected and healthy as solids increase.
What to Tell Your Pediatrician
- Describe when you first noticed baby not drinking enough milk or formula and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby's intake has dropped noticeably for more than 2 to 3 days and you are concerned about weight gain.
- Mention if your baby seems hungry and fussy but then refuses the breast or bottle when offered.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Your baby drinks slightly less on some days and more on others while maintaining consistent diaper output
- Your baby's intake decreases temporarily during a minor illness like a cold
- Your older baby drinks less milk as they eat more solid foods
- Your baby feeds efficiently in 10 to 15 minutes rather than the 30 to 40 minutes they took as a newborn
- Your baby is following their growth curve despite some daily variation in intake
- Your baby's intake has dropped noticeably for more than 2 to 3 days and you are concerned about weight gain
- Your baby seems hungry and fussy but then refuses the breast or bottle when offered
- Your baby is consistently below the expected intake for their age and has slowed weight gain
- Your baby seems to be in pain or discomfort during feeds, which may indicate reflux, ear infection, or oral thrush
- Your newborn under 1 month is feeding fewer than 6 times in 24 hours or producing fewer than 6 wet diapers daily
- Your baby shows signs of dehydration: sunken fontanelle, no tears, dry mouth, or very concentrated dark urine
- Your baby is lethargic, unusually difficult to wake for feeds, or has a high fever alongside reduced feeding
What You Can Do at Home
- Keep track of when you notice baby not drinking enough milk or formula — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that your baby drinks slightly less on some days and more on others while maintaining consistent diaper output — this is generally within the range of normal.
- At 0-2 weeks, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Offer feeding in a calm, distraction-free environment. Avoid forcing or pressuring your baby to eat.
- While monitoring at home, seek immediate care if your newborn under 1 month is feeding fewer than 6 times in 24 hours or producing fewer than 6 wet diapers daily.
Related Resources
Milestone Checklists by Age
Track your baby's developmental milestones from birth to 5 years with age-specific checklists.
Feeding & Nutrition Guide
Complete guide to breastfeeding, formula feeding, and solid food introduction.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is baby not drinking enough milk or formula normal?
When should I call the doctor about baby not drinking enough milk or formula?
When is baby not drinking enough milk or formula normal?
What causes baby not drinking enough milk or formula?
What should I mention to my pediatrician about baby not drinking enough milk or formula?
Is baby not drinking enough milk or formula normal at 0-2 weeks?
Is baby not drinking enough milk or formula normal at 2 weeks - 3 months?
Should I go to the ER for baby not drinking enough milk or formula?
Does baby not drinking enough milk or formula go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Baby Not Drinking Enough Milk or Formula.
Things to mention
- Describe when you first noticed baby not drinking enough milk or formula and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby's intake has dropped noticeably for more than 2 to 3 days and you are concerned about weight gain.
- Mention if your baby seems hungry and fussy but then refuses the breast or bottle when offered.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Your baby's intake has dropped noticeably for more than 2 to 3 days and you are concerned about weight gain
- Your baby seems hungry and fussy but then refuses the breast or bottle when offered
- Your baby is consistently below the expected intake for their age and has slowed weight gain
Urgent signs to report immediately
- Your newborn under 1 month is feeding fewer than 6 times in 24 hours or producing fewer than 6 wet diapers daily
- Your baby shows signs of dehydration: sunken fontanelle, no tears, dry mouth, or very concentrated dark urine
- Your baby is lethargic, unusually difficult to wake for feeds, or has a high fever alongside reduced feeding
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of baby not drinking enough milk or formula are normal. Talk to your pediatrician if your newborn under 1 month is feeding fewer than 6 times in 24 hours or producing fewer than 6 wet diapers daily.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Related Feeding Concerns
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Could My Baby Be Aspirating During Feeding?
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My Baby Keeps Clamping Down on the Spoon
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