day 2 on caplyta, please tell me this gets better

hi! i am currently day 2 on caplyta 21 mg for schizoaffective depressive type and comorbidities (OCD, cPTSD, etc.) i am cross tapering off seroquel (down from 400 mg 50 mg over the course of 4 months) and holy cow i feel terrible. the first day, i took it in the morning. i took a really long nap, but 6 hours later ended up with an awful migraine. i have chronic migraine so i tried my ubrelvy, which did nothing. neither did ibuprofen. it was gone when i woke up the next morning. then yesterday, i decided to try it at night and see if i could sleep through the worst of it. i did, slept for almost 12 hours straight. now i feel so insanely dissociated, very far away and disconnected. my whole body hurts, slight headache, very light sensitive. i almost feel like a baby deer just stumbling around. has anyone else have a similar experience? if so, how long does it take for this to get better? im desperate to get off seroquel and need this to work for me, but i’m chronically ill and this extra pain and fatigue are really not working for me. tia!