Prn for sleep?

Ii have Seroquel plus Trazadone plus Haldol each evening. Works pretty well.

i discontinued trazodone due to low vigilance in the morning and impaired cognition also it didnt help me with insomnia. i just want to know is these side effect permenant? it has been around 35 hour since last dose and these side effects is still and it bothers me.how much time needed to get rid of these side effect?