Co sleeping and marriage FTM 😫

So I love my husband to pieces.. we've been together for almost 10 years now, married for 5. He is also 23 years older than me😶. We recently had a baby in Oct 2019, my first, his fourth. We have a great life, but since the baby was born there has been a serious disconnect. Ive tried taking to him but he's not a great communicator at all, so typically all I get out of him is an "I'm fine". We hardly had sex while I was pregnant... mostly his fear because his previous marriage she went into premature labor every time. I was thinking we'd just get back to it once the Dr gave me the go ahead...but then he was worried about birth control so we waited a little longer until they could do my iud. Well in between things while trying to take care of a newborn and exclusively breastfeeding, we slipped in to co sleeping with our baby. His idea btw, not mine. But I can say that I have absolutely loved co sleeping, aside from it making it extra difficult to have sex. We actually put a second mattress in our room just to have sex on lol. But it rarely happens and I'm seriously worried now that I'm just slowly loosing my husband. He sleeps in the living room now or in our trailer, he works long hours and comes home late, and typically finds someone elses house to go hang out at when he can. I feel like he was attracted to me how I was before, but not to me as a mom. Even though I'm still me, he wants to go to parties and neighbors houses all the time and hang out, which is fine but Im nursing so I can't drink and I have another human being who is entirely dependent on me and goes to bed early, so it's not like I can just be care free and party like before. He's in his 50s while Im in my 30s and while our age difference has never been an issue, I almost feel as if he regrets where he is in his life now. We discussed having a baby loooong before we started trying, and still then it took a year after that to conceive. Im thinking now that the reality of having a baby and everything that goes into taking care of them is more than he bargained for. I just see all of this snow balling and the only fix I can somewhat think of is to get my baby girl out of my bed. But I have no clue how and he isn't any help cause he puts her to bed in our bed too. I don't even know where to begin. Please send help 😞😞😞😪😪😪💔