Sleep help

I have a 4 1/2 month old ever since he was born. He hasn’t slept very well. The most he will do is a four hour window to start with. Then it trickles and kind of does either two or one and a half hour in between I feed him to put then back to sleep. He will not settle with anything else. I’m wondering if there is any sleep training that doesn’t involve the cry it out method as I do not believe in this I am struggling as now after the course of five months I’m still getting up four or five times a night. We suffered sleep regression a few weeks ago when he was waking up around eight times that has settled and we are back to the original four or five times. Will he just settle on his own and just start linking more sleep. I mean I would be happy with 2 to 3 wake ups as I’m not expecting a miracle I know he’s a baby still any suggestions would be so helpful during the day. He will sleep for either three or four naps ranging from 30 to 45 minutes with about a 2 to 2 1/2 wake window in between.