Chlorpromazine - When to take it

I'm on Chlorpromazine after being discharged from hospital when it was my PRN used for if I was agitated, hearing/seeing things, or if I couldn't sleep. My psych told me to take it at night but i'm having a lot of trouble getting up in the morning and I don't know if this might be what's causing it.

If you're on Chlorpromazine, when do you take it?

It will take me a while to get an appointment with my GP and I want to get this sorted quickly because, this might sound stupid, it's making me more suicidal because I can't get out of bed until the late afternoon.

Thanks in advance.