How to deal with insomnia while taping off 10mg ami

I’ve been on 10mg ami for 4 years, initially for cyclic vomiting issues stemming from a bad mental burnout/breakdown.

I really haven’t needed it anymore for many years, but every time I try to come off I go back on because I can’t handle the insomnia.

I decided I need to come off for good this time, because I can’t take the constipation side effect anymore. It makes me feel gross and heavy and irritable and I hate it.

Does anyone have any tips for dealing with the insomnia during withdrawal? Any sleep aid supplements that can help? I’m taking melatonin and while it helps me fall asleep I still wake up too early and can’t fall back asleep easily.

How long does the withdrawal last? Should I just power through, will it be better in a week?

Thank you.