Weight / Fat loss

Daft question:
I've been on meds which completely destroy your appetite. The trouble is when you come off them your stomach and brain have no idea about when you feel full - you feel starving hungry 24/7. I've never really been one for midnight munchies, but I'm finding this is happening more often.

Any suggestions to retraining your brain? The usual stuff like taking at least 20 minutes over every meal is not working.

Has anyone here tried hypnosis?

Just want to update you where I am on this... It seems after a few weeks your body adjusts itself naturally. The cravings have stopped and feel like I'm back in control.
It hasn't been without consequence though... I'm now the heaviest I've ever been. :(

Am back in the gym but taking it very slowly. Not allowed to do more than 3-4 mins on the bike at the moment.