Need advice please! (Sleep routine and rolling over)

Mafe

Hello, my baby will be five months on July 13th, and his schedule is all over the place, I would like to put him in a schedule but it’s really hard because he sleeps literally when he wants to. I mean I can’t “force him” to sleep leaving him in the crib crying til he gets tired. When I’m nursing he falls asleep but as soon I place him in bed he is up and crying. Any advice???

And second: he started rolling over but at midnight is not cool, sometimes one of his arms gets stuck and his head is not all the way to the side and he is breathing through the mattress (his nose is against the mattress) you know what I mean? so I literally jump every time I heard the minimum noise, and I can heard his nose getting stuck/stuff. Why you ladies manage these situations?? Thanks in advance.