My son eats plenty during the day/before bed and yet he won't sleep longer than 2-3 hours. I put him…

My son eats plenty during the day/before bed and yet he won't sleep longer than 2-3 hours. I put him on the boob and once he's awake it's so hard to get him back down in the night. I try to let him sleep next to me which is beyond frustrating cause he's up my ass and then All he wants to do is be on the boob. I just am at a loss at what to do to make this child sleep. He's almost 8 months old! Crying it out barely even works unless it's right when I put him in his crib after his bottle. Otherwise he just cries and cries especially when it's light out. I just don't get it. 😫😣😴 please tell me I'm not the only one with a child who won't sleep unless they are on the boob. Like idk what he's going to do when I'm unable to give him the boob anymore, which I don't think he gets much from me as it is. But he's going to be 8 months old I want him sleeping on his own and Not just a "nap" 🤔 everyone saids it gets better well not with this kid he's taken 12 steps backward 😩