Diagnosed as BPD, but--

Hello. I'm diagnosed as BPD. I also have DSPD, which mean that my biological clock is quite different, I feel tired at late night, mostly at 4 am, and sleep till noon.

I wake up okay. But as it gets darker, I get darker too. Dysphoric, suicidal, anxious, paranoid, crying, overwhelmed.

I thought BPD isn't supposed to come in waves like that. Why is it happening?

Also, if I take enough pill to get me sleep at night, I'm fine in the morning. Was wondering if anybody else have this sort of thing?