DS is 3 plus 1 month. We've realized lately that a lot of our struggles with his behavior are probably because he doesn't sleep enough at night.
Part of our struggles with him getting enough sleep at night are probably because he will not fall asleep unless he's in the car and even that's iffy) or someone is laying with him. So these days we often don't even try to put him to bed until we're ready ourselves, which isn't great for several reasons, not enough sleep for him being the top one.
We will start our bedtime routien around 8, brush teeth, get jammies on, read books and snuggle. Then if one of us tries to leave him, he protests. We tell him we have to go pick up or do other things around the house and that he needs to stay in bed and go to sleep. He's great at the first part (thank goodness) but terrible at the second. He'll sing, talk and play with himself for hours. We will go check on him but we find that that often encourages him to follow us back out of the room or makes him upset.
Any suggestions on how to help him fall asleep sooner and/or without us? We do co-sleep and we're fine with that, and I don't even mind going to bed with him sometimes. But it's really not practical for us parents to sleep as long as DS needs to, someone's gotta pay bills, clean up, make siblings, etc ;-).