Toddler Development: Ages 1 to 3

Your toddler is growing, learning, and changing every day between ages 1 and 3. These years bring big milestones—from walking and talking to potty training and moving into a big-kid bed. Here’s a guide to help you know what to expect and how to prepare.

Equipment You’ll Need (Ages 1–2)

• Toddler car seat (30+ lbs, up to age 5)

• Safety rails for beds

• Potty chair (tip: hot glue the pee guard so it stays put!)

• Diaper caddy for quick access

• Waterproof mattress protector to save the mattress from accidents

• Step stool (hand washing + potty training support)

• Sleep training clock for bedtime routines

• Bathtub mat for safe toddler showers

• Car seat foot rest (for comfort on rides)
  
  

Feeding Essentials

Toddlers love independence! Stock up on extras so you aren’t stuck mid-wash:

• Cups with straws

• Forks & spoons sized for little hands

Toys for Play & Growth

Encourage movement and imagination with:

• Blocks, slides, and rocking horse

• T-ball set or soccer goal

• Sandbox with cover

• Tricycle (with helmet!)

Clothes & Accessories

Plan ahead for growth spurts and seasons:

• Shoes: flip-flops, sandals, sneakers, rain/snow boots

• Clothes: 18 months–2T, then rotate to larger sizes as needed

• Sun hat: 2T–4T

Changes Needed

• Diapers: Size 4 (22–37 lbs)

• Clothes Storage: Put up and store 6–12 month clothes in totes, properly labeled, to make room for 18 months–2T clothes.

• Organization: Place current sizes in the dresser and change dresser labels to match the new sizes.

Routines & Sleep (1–2 Years)

Most toddlers settle into a daily schedule around 16 months. Use a 1–3 Year Old Schedule with consistent wake, nap, play, and meal times. At night, introduce a calm routine—bath, lotion, book, lullabies.

Outdoor Play & Safety

• Use rash guards or sunscreen + bug spray (apply sunscreen first, then insect repellent).

• Don’t forget hats, sunglasses, and water bottles.

Bathing

Once toddlers stand, try short showers with a removable shower head at their level. Many kids love the independence! Just make sure the bottom of your tub has a non-slip mat or safety stickers to prevent slips. 

Transitioning to Cow's Milk

• Start with toddler milk for added nutrients.

• I Slowly mixed in whole milk (started with 2 oz whole milk + 6 oz toddler milk).

• Watch for constipation—adjust as needed and talk to your pediatrician.

Food & Allergies

• Let food cool before serving.

• Introduce new foods slowly (like peanut butter, spread thin on puffs or toast).

• Stick to recommended serving sizes (AAP suggests 2–3 cups of milk daily for ages 1–2).

Big Transitions by Age

• Toddler bed: Often around 15–18 months (safety rails recommended).

• Forward-facing car seat: At 2 years old or 40 lbs (whichever comes first). Check out the picture below to make sure your child is in car seat properly. 

• Tricycle: Start with parent-push mode, then gradually let them ride independently.