how do i calm my anxiety down at night ,!?

so insomnia and anxiety don't mix well at all... i sleep at 5 in the morning because of my anxiety attacks and insomnia and don't wake up till 2 or 3 pm in the afternoon 😫 right now i'm having a panic attack because i'm really tired / nervous for no reason .... How do i make myself go to sleeep early??? and how do i calm down my anxiety ????