Days and Nights Confused

My daughter has been a night owl from day one . We’ve had many failed attempts at sleep training because she will scream and cry and work herself into a frenzy to the point of choking and sounding like she’s going to throw up .

When she was 10 months old , we finally got her to sleep from 11:30pm-10am which was working out great for both of us . I work overnights , and my husband works evenings . It seems like after her one year vaccines and then daylights savings time , she has regressed , and now she has her days and nights entirely confused .

I tried to up her bedtime to 10pm, but she just takes it as a nap , and wakes up at midnight , and then stays up until 6am !!!

I have zero idea how to fix this. My ped had zero helpful advice other than to try the extinction method , put her in the crib , and don’t get her til morning . My husband tried that last night , but had to get her after an hour of CIO because she worked herself into such a frenzy that she ended up throwing up .

I really don’t know what else to do . I keep what I want to be her bedtime consistent always , she’s very active during her waking hours , etc