applaud the effort to lose weight. one thing most folks refuse to understand is that calories in is more important than calories out. excercise is great and has a place in healthy life, but moderation in food intake is the more logical method to stay healthy. much less effort and bang for the buck.
look up something called the fast mimicking diet. from a guy at USC. i realize KETO is the new hot thing, but i have a buddy that does research there, he's seen the data, VERY significant results. one crappy week per month on a vegan diet, something like 600 calories only. start with 4-6 months of it. then do one month per quarter once your levels are healthy. he said he's seen patients like you- lots of hard living- come back to the level of folks in there 30s on the diet. he's seen diabetics "cured" on the diet. (not type 1 obviously)
regardless of whether you do that or not, i hate to be a party pooper but if you're "fasting" while also drinking kombucha and kefir then you're not doing nearly as much good as you could be. unless your kombucha is the kind thats all acetic with no residual sugar, that stuff has lots of sugar left. you're basically adding carbs while you're supposed to be "fasting" which is kinda oxymoronic. best results are had when there is no simple sugars/carbs at all. HOWEVER- you're still not eating, so you're still drastically cutting calories. which is always going to work. but just wanted to point that out in case you hadnt realized it.
and lastly, lift some weights. will help improve testosterone levels, which increases metabolism, in addition to extra muscle mass burning more calories, as well as increases bone density. pushups, lunges, pullups, squats, etc. plenty of stuff that you can do without equipment if a gym is no where nearby.