Getting my son to lay his self down for a nap or to bed is sooo hard. He's so use to laying on my…

Getting my son to lay his self down for a nap or to bed is sooo hard. He's so use to laying on my chest but it's getting uncomfortable as my bellys growing. He will try to jump on me if I put him for a nap in our bed and he'll hit me and scream as loud as he can. Ugh any tips?! Hes 11 months and it's time I stop holding him to fall asleep.