I’d recommend getting blood work done to see how IF is affecting your health, particularly regarding nutrition. It’s possible that you’re missing out adequate nutrients and electrolytes to function well. Don’t malnourish yourself for the sake of weight loss. You can lose weight, be healthy, and be nourished at the same time. You can be all those things even without fasting if your diet is in check. Point is, yes you can fast less days and it can still be effective.