9 month old doesn’t fall asleep on his own?

Autum • Oct. 2020 ❤️

My son is 9 months and there is no way I could EVER just lay him down when he’s tired and him go to sleep. I have to rock him to sleep.. then if I set him down and he wakes up, I have to rock him again. Yes after I rock him & lay him down, I’ve tried to walk out and let him cry for a minute.. bc sometimes he will fall asleep after a minute or so. But most of the time no way. I always have to rock. He will scream and scream for hours if I don’t put him to sleep. Is this normal? I see other people with children my sons age not go thru this at all. I’m a FTM so I’m really learning here.