Waking up inconsolable

Anyone else experience their 7mo old babies waking at night inconsolable? My son started this a few days ago. He'll wake between 11&1 and will NOT go back to sleep. He grabs the rails and stands and tries to climb and screams as loud as he can. I've tried waiting a few mins and then coming back to soothe him and I've tried removing him to feed him then putting him back when he's sleepy again and he WONT have it. I feel like he has some kind of need to be met and I can't help but feel like it's separation anxiety maybe? He calms down once I bring him back into bed with me but it takes a while for him to calm down even then because he had gotten so worked up. I love cosleeping but it's scaring me since he is crawling and now trying to stand/walk. Please no bashing. FTM here not really sure where to go. I know some will say I'm making it harder for myself by caving but when I do he has been crying for too long for me to just let him go with it. Looking for some guidance on this one 🤔