Do you know what is the best way to slowly get of minoxidil (e.g. with gradual decrease in dosage/ concentration application)?

I have first used Regaine three years ago for 5 months and then decided to quit (cold turkey). After one month I started getting massive sheds, which continued for 4 months - I got back on it and my hair loss stabilized. I have been on it for 18 months, I believe its effectiveness disappeared and some of the side effects appeared. I know that if I give it up cold turkey I will get massive sheds again but I was wondering if there is a way to get off it slowly, over time. Any help is greatly appreciated.