3 1/2 month old hard time sleeping
I'm a new mommy and my son is 3 1/2 months old and at first he sleep great only waking up to eat. But for the past week now when I rock him to sleep he goes to sleep good but when I put him in his crib he wakes up 5 minutes later. I have been staying up till 1 or 2 when he eats again and after that he goes right to sleep and I can put him in his crib. I have done everything the same haven't changed anything. I have tried feeding him before I put him to sleep and he goes to sleep till I put him down. He never had a prob. With it before. And I can't let him cry in is crib cause his crib is in our room cause we are living with his parents and I'm not working so I get up at night with my son while his dad sleeps. So I rock him till he is sleeping. My fiancés mom says its cause I hold him a lot but I don't think I do...
Does anyone know what I can do??