How can I help him

My boyfriend's been waking up having nightmares which is what he calls them. But I think it's for him dreaming about the life he thought he was going to have with his child that he's been alienated from. His ex got mad after they used his past against her when she tried to terminate her older child dad's right after years of not letting him see that child and she blamed him so she surprised him with an annulment and then informed him she was pregnant which they had been trying to do. Well he didn't realize the lawyer wasn't on both their sides and and he was told custody could only be done after the baby was born and couldn't be handled at that time and he didn't get a lawyer of his own and didn't have anybody to tell him different so now a baby's been born he had no idea when never seen it doesn't even know the name and it's killing him and it's affecting our relationship because it's so hard to watch and it affects how he treats me and he's wonderful to me and sweet but he scared to get too close and I can't afford to help him and he's scared to go to court because what the GLA used against them when trying to take the other dad's rights but looking in from the outside this seems to be something she does she gets pregnant and then finds a reason to alienate the dad he can't see that he's done nothing wrong so any advice on how to help him sleep better would be great at the very least because I don't know what to do. It's been sleepless nights since he was told she was born he wakes up screaming every night.