not sure what i am doing wrong here...please share with me if you will how often/long your 4m old naps.

i can't figure out DS's schedule yet and i go back to work next week. i know it's still early..

He wakes up a different time each AM (maybe thats the problem)
after that wakeup he almost always goes down 2 hrs after. sleeps for about 2hrs.
then that seems to be it. he is almost impossible to go down for an afternoon nap. so he is awake from like 1pm/2pm til bedtime at 7.
he is an easy baby but by 7...ugh it's been a long day!
how do i get that afternoon nap going?!
TIA if you actually read this or for any thing you can add!