Oh good! I wasn't sure if the 21 day detox was gradual or complete.
My suggestion is actually to do the exact opposite of "turning yourself into a robot having to follow the same schedule of eating and exercise everyday". On the modern insulins there is no need to always eat at the same time, and with I:C ratios no need to always eat the same foods. Part of my recovery continues to include that I have to enjoy what I eat. I don't feel at all deprived. I love what I eat and for me it works to spend time cooking so I have interesting dishes that are still reasonably low carb (and vegetarian which makes it harder). When I first got into recovery my "abstinence" was simple: I ate three meals a day, nothing in between, no sugar at all and otherwise ate whatever I wanted. The "whatever I wanted" hasn't been possible with D as I gain weight very easily so have to watch my carbs. But that makes it all the more important that I enjoy what I eat! I also try to remember that many things other than foods can be "treats". I used to have a sticker on my fridge that says "there's no love in here". Finally support is great, so if you like and can continue with this program to connect to others that's great. Other possibilities are the groups on here or OA which now has online meetings as well as live
First of all congratulations on your detox. I think you are wise to think about after the 21 days as that's where most people lose it. They can be very strict for a short amount of time and then feel deprived and splurge. You might notice me disagreeing when people on here talk about "needing a treat". Finding a middle ground carb wise you can live with and different foods you really like is the way to stop from pinging back and forth between indulgence and deprivation. For me that middle ground can't include any sugar at all, but I don't miss it. When I was in Guatemala and they put sugar in my drink by mistake it tasted awful to me!