Long one sorry 😬

Hey guys looking for some advice:

My baby is 19 weeks, and I can feel my SO’s depression starting to build, he’s getting more frustrated with little things and being cranky and distant a lot... he’s normally the calmest person I’ve ever met who lives in the moment and is always laughing. He has no ill feelings towards the baby, or me really for that matter... but he’s frustrated with the lack of time we have for eachother. Weve kinda become two passing ships, we both work six days a week, and when we’re home, one of us has the baby the other cooks or cleans or takes care of what needs to be done. He will mention he has no “outlet” he sold his Subaru because he’s an adrenaline junky and it was getting him in trouble, he got really into airsoft but then we had the baby in October and then it became winter, and I’m sure I’ll be bummed when it starts back up cuz we only have two weekends as a family a month, and i know I have to choose either since we both work every other Saturday I either choose that Sunday for him to go, or the Saturday I changed my schedule to make sure we had as a family.... we’re hikers, I’m not currently cuz winter and really out of shape lol he doesn’t go cuz he rushes home to help with the baby.....we don’t even sleep in the same room... he will avoid me because he knows I’m too tired to be in the mood. My child still wakes every two hours and I have an autoimmune disease and a birth defect that cause my body a lot of pain when it’s overly tired, but I don’t complain, I just keep

Going, but the baby and I go to bed together around 1030pm and he ends up falling asleep on the couch, idk maybe this is all normal, but he doesn’t speak much, so when he constantly keeps saying things like “I need a hug” or “really needed that hug” (when I give him one) or random messages like “sorry if I was a jerk last night” (when I didn’t notice anything) or getting overly angry about something that usually wouldn’t phase him.... I listen. But I don’t know what to do.... I’m a breastfeeding new mom working two jobs, I don’t have any time for myself whatsoever but I’m fine with it. My son is all I’ve ever wanted... but I certainly don’t want to make my SO feel Unwanted... but I honestly have NO extra mental space right now.... what do I do?