6 month sleep regression?

C

In the last two weeks longest stretch of sleep my baby has given me is 3 hours at most. She will be up every hour and won’t resettle herself back to sleep. I’m exhausted and have done it all, watched her wake windows, total day sleep, bed time earlier, later, different sleep sack in case she’s cold/hot, and nothing gives me a different outcome. I’m exhausted and the last time she slept this bad was around 3.5 months which I considered her 4 month sleep regression. I just want sleep!! I thought as she got older it’d get better but I was wrong.