Help! How do you deal with the insomnia??

Guys, I cannot take the insomnia. I already had to quit keto once because I couldn't take the sleeplessness. Any suggestions?

Here's what I've already tried:

-- I'm on a heavy dose of sleeping pills (trazodone) because I have insomnia even without keto--keto makes it way worse. My doctor doesn't think it's safe to increase the dose.

--Melatonin has never worked for me.

--I have 2 coffees max per day, never after 5 p.m. I'm going to change that to 1 p.m. starting today.

--I go to bed in a cool, dark room.

--I've tried taking my emergency anti-anxiety meds (Klonopin) before trying to sleep, but it doesn't help significantly and I don't want to rely on it.

[Edited to add:]

--I take a magnesium supplement before bed (and potassium in the morning, so I don't think it's an electrolyte issue).

--I only drink alcohol once or twice a month, usually a max of one drink.

Please help!