My LO will be 4 months in about a week. Her morning nap is pretty predictable. We get up between 8-8:30 and she falls asleep around 10 ish. She'll nap for about 2 hours. Occasionally three. When it comes to afternoon naps, it's like my kid was replaced with a robot that doesn't need sleep :) sometimes she'll fall back asleep between 2-3, but lately she's been fighting it like crazy. Sometimes she's crabby fighting sleep and sometimes she's happy like she's not even tired. Every website I look at says between 3-6 months, they nap 4-5 times during the day?!?! Mine gets 2 on a good day. What are your naps like with a 3-4 month old?