Need to change medications

I have been taking invega sustenna since august-september 2017 and while I noticed that it improved my grades during 12 th grade, I went from 9/20 to 13/20 in french final high school examinations, however it is now causing sleep problems which I need recommendations on how to solve since even the best doctors of my country arent able to fix it for me maybe there is someone who can fix it for me. I have been having sleep problems on invega since january 2019, i have been taking seroquel 50 to fix it and even since 6 months even seroquel cant fix it and i switched to remeron. so i need either a drug better than remeron for fixing sleep problems or i need to change invega with another drug like latuda or better than it.
so please if you can help me i have finished one year of college up until now and still have 2 years left and i dont think i will make it without your help. if you think i can stop invega without any problems of relapse please do advice me as a 3rd option also.

schizophrenia symptoms appeared by having consistent thoughts of having brain damage and being damaged in the brain. so i thought i was mentally damaged even though i was still capable of a lot of things because i succesfully passed 12 th grade. do you think this is a delusion? after medications i stopped having these thoughts and they were gone also grades improved in 12 th grade and i succesfully finished high school and reached college. also there were social isolation where i sat alone in high school and it decreased in college.

You could try zopiclone or melatonin. Benzos is also used for sleep but you can get addicted to them.

If you wanna change antipsychotic ask your doctor.

Zyprexa is a sedative ap for example.

I have a hard time getting to sleep.