Feeding Your 12-18 Month Old: The Toddler Transition

The transition from baby to toddler brings big feeding changes: switching from formula to milk, weaning from bottles, eating family meals, and navigating the infamous toddler pickiness. This guide covers everything you need to know about this stage.

Content reviewed against published AAP, WHO, CDC guidelines

Editorial policy

Last reviewed:

Key takeaways

  • At 12 months, switch from formula to whole cow's milk (16-24 oz per day max) served in a cup, not a bottle.
  • Food is now the primary nutrition source - aim for 3 meals and 2 snacks per day with a variety of foods.
  • Toddler appetites are naturally erratic - they may eat a lot one day and almost nothing the next. This is normal.
  • Wean from bottles by 12-15 months. Prolonged bottle use increases tooth decay and excess milk intake.
  • Excess milk (over 24 oz/day) is the top reason toddlers refuse food. Limit milk and serve it only with meals.

Transitioning to whole cow's milk

At 12 months, you can switch from formula to whole cow's milk. Whole milk (not 2%, 1%, or skim) is recommended until age 2 because toddlers need the fat for brain development.

How to transition

  1. Week 1: Mix 3/4 formula + 1/4 whole milk
  2. Week 2: Mix 1/2 formula + 1/2 whole milk
  3. Week 3: Mix 1/4 formula + 3/4 whole milk
  4. Week 4: 100% whole milk

Important guidelines

  • Maximum 16-24 oz of whole milk per day
  • Serve milk in a cup, not a bottle
  • Offer milk with meals, not between meals
  • Excess milk suppresses appetite and can cause iron deficiency
  • If breastfeeding, you can continue alongside solid food - no need to switch to cow's milk

Weaning from bottles and breast

Weaning from bottles

Goal: Bottles gone by 12-15 months

  • Drop one bottle at a time (every 3-7 days)
  • Start with mid-day bottles, end with bedtime
  • Replace with an open or straw cup
  • Replace bedtime bottle with a cup of milk + book
  • Be consistent - going back and forth makes it harder

Weaning from breastfeeding

No rush - wean when ready for both of you

  • Drop one feed at a time (every few days to a week)
  • Start with the feed your child is least attached to
  • Offer a cup of milk and a snack/distraction instead
  • Morning and bedtime feeds are usually last to go
  • Gradual weaning is more comfortable for both of you

What toddlers should eat

Toddlers should eat the same foods as the family, cut into safe pieces. Aim for variety across the week from all food groups.

Daily food groups

  • Grains - 3 oz (1 slice bread = 1 oz)
  • Fruits - 1 cup total
  • Vegetables - 3/4 cup total
  • Protein - 2 oz total
  • Dairy - 2 cups (includes milk)

Portion sizes (1/4 of adult)

  • Meat: 1-2 tablespoons per serving
  • Vegetables: 1-2 tablespoons per serving
  • Fruit: 2-3 tablespoons per serving
  • Grains: 1/4 slice bread, 2 tbsp pasta
  • Offer more if they want more

Sample day: 14-month-old

7:00 AMBreakfast: oatmeal with berries + scrambled egg + milk in cup (4-6 oz)
9:30 AMMorning snack: sliced banana + whole wheat crackers + water
12:00 PMLunch: grilled cheese on whole wheat + steamed broccoli + melon pieces + milk in cup (4-6 oz)
3:00 PMAfternoon snack: yogurt + soft apple slices + water
5:30 PMDinner: pasta with meat sauce + roasted sweet potato + peas + milk in cup (4-6 oz)
7:00 PMBedtime snack (optional): whole grain toast with peanut butter + milk (4 oz)

Total milk: approximately 16-20 oz. Offer water with all meals and snacks.

Navigating toddler pickiness

Picky eating often begins between 12-18 months as toddlers assert independence. This is a normal developmental phase, not a failure of parenting.

  • Keep offering variety - Even if it gets rejected. It can take 10-30 exposures before acceptance
  • Always include one "safe" food - At each meal, include at least one food you know they will eat
  • No pressure, no force - Your job is to offer; their job is to decide what and how much to eat
  • Eat together - Toddlers learn by watching you eat the same foods
  • Limit milk and juice - Full tummy from drinks means no appetite for food
  • Keep mealtimes short - 15-20 minutes max. If they are not eating, calmly end the meal
  • Do not make separate meals - Serve family food with at least one accepted item included

Key nutrition concerns at this age

  • Iron deficiency - The most common nutritional deficiency in toddlers, often from excess milk and limited iron-rich food intake. Limit milk to 16-24 oz and offer meat, beans, and fortified cereals daily
  • Healthy fats - Still critical for brain development. Use whole milk, offer avocado, nut butters, cheese, and cook with olive oil or butter
  • Vitamin D - 600 IU/day recommended. Found in fortified milk, fatty fish, and supplements
  • Fiber and hydration - Constipation is common in toddlers. Offer fruits, vegetables, whole grains, and adequate water
  • Avoid excess sugar and salt - Taste preferences are forming. Keep added sugars and sodium low

Foods still to avoid or modify

  • Whole grapes - Quarter lengthwise
  • Cherry tomatoes - Quarter
  • Hot dogs - Cut lengthwise, then into small pieces
  • Whole nuts - Use nut butters instead
  • Popcorn - Not until age 4+
  • Raw hard vegetables - Cook until soft or grate finely
  • Sticky candy, hard candy, marshmallows - Avoid entirely
  • Unpasteurized foods - Continue to avoid

Frequently asked questions

When should I switch from formula to whole milk?
Switch from formula to whole cow's milk at 12 months. Introduce it gradually by mixing increasing amounts of milk with decreasing amounts of formula over 1-2 weeks. Offer milk in a cup (not a bottle). Limit total milk to 16-24 oz per day to avoid suppressing appetite for solid foods and contributing to iron deficiency.
How much should my 12-18 month old eat per day?
Toddlers need about 900-1000 calories per day, split across 3 meals and 2 snacks. Portions are roughly 1/4 of an adult portion. Toddler appetite fluctuates dramatically - they may eat voraciously one day and barely eat the next. This is normal. Look at nutrition over the week, not individual meals.
My toddler only wants milk and refuses food - what should I do?
Excess milk (over 24 oz/day) is the most common reason toddlers refuse food. Milk fills them up and provides easy calories, reducing appetite for solids. Limit milk to 16-24 oz per day (served with meals, not between), stop bottles if still using them, and offer water between meals. Appetite for food typically improves within a few days.
Should I still breastfeed after 12 months?
The AAP supports continued breastfeeding for 2 years or beyond, as mutually desired by mother and child. The WHO recommends breastfeeding until at least 2 years. After 12 months, breast milk becomes a complement to solid food rather than the primary nutrition source. You can continue as long as it works for both of you.
Is it normal for my toddler to eat barely anything some days?
Yes, this is completely normal. Toddler growth slows significantly compared to infancy (growth rate drops by about 50%), so caloric needs per pound actually decrease. Combined with developing independence and food preferences, erratic eating is one of the most normal aspects of toddlerhood. Focus on what they eat over a week, not per meal.
What foods should I avoid giving my 12-18 month old?
Continue to avoid choking hazards: whole grapes (quarter them), whole cherry tomatoes (quarter), hot dogs (cut lengthwise then slice), raw hard vegetables, whole nuts, popcorn, sticky candy, and large chunks of meat. Also limit added sugar, honey is now safe, but avoid excessive juice (max 4 oz/day) and highly processed foods.

Bottom line

At 12-18 months, food becomes your toddler's primary nutrition source. Switch from formula to whole milk (16-24 oz max per day), wean from bottles by 15 months, and serve family foods in small pieces. Picky eating is normal and usually responds well to low-pressure, consistent variety. Your toddler's appetite will vary dramatically day to day - trust their internal regulation.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

All content follows our editorial policy and is reviewed against published clinical guidelines.

2,705 evidence-based guides6 authoritative medical sources