So desperate, can’t sleep more than 3 hours

Please someone give something other than sleep hygiene and magnesium. I have not any sleep issues for 30 years, but since stopping an antidepressant like 6 months ago I just can’t sleep at all, most nights I wake up after 3 hours. I’ve quit my job, I can’t function. I can have stress free days or days I am so tired but I still can’t stay asleep to save my life. Doctors don’t care and just tell me to go on anti anxiety medication or sleeping medication. It might help sure but I never had these issues before I started antidepressants and I just wanna get through these withdrawals or whatever it is, I don’t want to ever go through this again it’s too hard on my body and mind.