My world as well at that age
Teeth took forever and my kids sleep didn't improve much till 18+ months. My daughter has been a bit better in recent weeks, only waking 2-3 times most nights.
Do you bed-share at all? That's the only way I've been able to survive. I stopped trying to 'fix' them and just found ways to make it easier on me. Sleep ins on the weekend, time out during the week and sleeping together.

The only other thing I can suggest is maybe diet?

Hang in there

ETA - did you just call my son a girl!?