I've been fasting on rest days (4 days/week) and eating more to make up for it on workout days for about 2 weeks, I've lost a good amount of weight since I'm at around 8000-9000 kcal deficit/week, but working out feels incredibly difficult and I'm sure I've gotten weaker. The thing is, my main goal is fat loss and secondary is strength maintenance, but if I'm going to lose too much strength I'd rather do it the old fashioned way. Any thoughts on this approach?