Hi OP,
So sorry you’re going through this. I know the feeling too well. DS1 was hard work for the first year. He would consistency wake up at 4-5am every day. We tried everything, every nap combination, sleep consultant, the whole lot!
Eventually we stopped trying and just let him do his thing and by 1 year he was sleeping through the night on his own, in his room. By then, we had a more structured routine and predictable nap schedule, not depending on wake windows.
But from 6m - 12m it was just pure survival. We let him stay awake but kept the room dark and calm and then he had an early morning nap. I would nap with him to catch up on sleep. DH would sometimes take him at 5am if we’d had a particularly rough night so I’d get more sleep.
It most likely isn’t anything you’re doing, try not to put too much pressure on getting things right. It could just be developmental, teething, habit and something baby will grow out of.
DS2 is 7 months and is doing the same thing as DS1. This morning he was awake at 5am ready for the day (but pretty grouchy). He’d also had 2 night wakes as well. I’m just about to have a nap with him!
I’m sorry if my reply isn’t particularly encouraging. The first year is incredibly hard, but it does get better! X
ps just to add, DS1 is almost 4 and since 1 years of age, we haven’t had any issues with his sleep thank goodness!