Please help!

My little one will be 6 months old on the 29th and her sleep is not normal. At first I thought she’s a newborn, they don’t sleep much. Then I figured she was a little colicky, then maybe she’s teething. Then her four month sleep regression. I’ve been sleep training for 7 weeks with no improvement. She is on a strict schedule, sleeps in a blacked out room, with white noise or lullabies, in her crib, in a sleep sack. I’ve limited her feedings to twice a night and she’s not allowed napping past 4:30.

STILL she is up 12-15 times a night. She wakes up screaming as though she is in agony. Many nights she will go on screaming for hours completely inconsolable. Absolutely nothing has helped. In the first hour and a half she’s been asleep tonight she’s already woken up 4 times.

We saw the NP at her doctors, she said “that’s certainly not normal but maybe she’s just one of those kids” and just had me keep her next wellness visit.

I’m hoping to find parents who have dealt with pediatric sleep disorders or advice in general.