Thanks for the reply! So let's say I ditch the fasting method of fat loss then. I have used a crash diet only once before. When I first started training at all and weighed 112,5kg, I used a regular caloric deficit and ended up weighing 82,5kg, eating 5000 calories daily with Intermittent Fasting layout and my weight staying the same. After some time my weight started going up even though I dropped calories to 3000 eventually. Soon I weighed 100 again, used a caloric deficit to go from 100 to 93 and eating 2000 calories per day.
If I am to use a caloric deficit again, (as the layer system isn't a viable option) would the I, Bodybuilder program be any better? The layout and body part priorization would suit my needs since my leg training is very restricted right now. I can do leg presses, extensions and curls mainly and I'm already built like a Tyrannosaurus so they are not that much of a concern to me. I am familiar with calorie counting and everything I eat either goes through a scale or I remember exactly how much of everything is there.
When training either on a deficit or a surplus, I've mainly been a low-ish volume, high intensity, high frequency trainee. I would MUCH rather do one absolutely destructive balls to the walls set with strict form than continous and redundant 3x8-12 or 5x5 sets. When I dug into the I, Bodybuilder program, it doesn't seem like too much volume for a very slight deficit especially for one with good recovery capabilities.