7 month old won’t sleep

Br

He goes to bed at 930-10, he wakes up 5-7 times a night and I’m so exhausted. He has all his needs met and I leave him in his crib but he cries so much he turns purple.. he just wants up 24/7 and whenever we put him down he throws big fits. We have another baby on the way and I don’t know how we’re going to do it. I’ve tried the cry it out method and any other suggestions would be helpful