I consistently lost 15 lbs per month w/ Keto OMAD. I really like this plan.I believe 72s have tremendous health’s benefits. I feel you should have no problem reaching your goals on 5 meals per week. The sooner you add a little resistance training, the more muscle you can preserve while losing a higher percentage of fat. Go get’em and let us k ow how it goes.
I’ll be very interested to see how this goes for you. You have similar goals (well, this was my goal before I gained weight recently) and height as me. 2 years back I did something similar to what you’re doing and I did manage to lose around 16kg but I was much heavier…I think I went from about 88kg to 72kg. Longterm, I went from 93 to 69kg. I did OMAD, increased my daily steps (plus I ran a few times a week) and did as many 48-72hr fasts as possible.
I could imagine it would become a lot harder once you get into 60‘s. I’d expect you might need to incorporate some weight training at some point. Anyways, good luck and I hope you post your progress! It might help motivate me! (I sadly put 20kg from going off antidepressants so I have to start from scratch)