Simple calculation (perhaps not entirely accurate, so YMMV): 950 cal/day deficit, or \~6700 cal/week ===>>> @ 3500cal/lb of fat, you should burn a little less than 2lb week. 13 weeks in 3 mo = somewhere around 26lb.
So you’d get close. But it’s a tough putt.
A 1,000 calorie deficit every day for 90 days would give you a loss of just over 25 pounds. So yeah, it’s possible. One thing that you didn’t mention though is your height or body fat - if you’re 5’6” and weigh 245 it’s going to be easier to keep that level of deficit for a long period than if you are 6’6” and already pretty lean.
Stop eating and do moderate movement and you should lose 2% body fat per week, at least that’s my experience.
Doesn’t sound like much but it is and if you can start stacking, you’ll see the results.
The key is to stop eating
Absolutely doable! I lost 17lbs in the last month with fasting and changing my diet alone.
36F, height: 5’8”, SW: 196.8, CW: 180, GW: 135. I started fasting consistently on Feb 4th, 2023. My fasting schedule toggles between rolling 48’s and 72’s. Zero exercise.✌️