How much weight gain during pregnancy is considered normal/healthy?

Had similar issues like yours. Was doing intermittent fasting for years. The change in how I had to eat when pregnant was quite an adjustment. I gained even more weight as my gynae instructed me not to exercise due to some medical issues in my first trimester. Now in my 2nd trimester and my weight doesn't fluctuate as much (or rather, too drastically too fast) with moderate activity approved and done consistently, and eating sensibly and healthily. It helped to know that most of the weight comes from fluids and maternal tissues (I take a screenshot of the weight breakdown to remind myself it's okay). Prior to my pregnancy, I didn't know how much weight gain to expect, so it's quite shocking... but now I'm starting to accept it as it is. I also find ways to dress fashionably, show off the bump haha and it helped. Above all, knowing baby is healthy and I'm medically well. Anyway, my gynae is not too concerned, too. Some days, I feel more insecure, and I'll put in a little more self-care, each day bringing me closer to baby's EDD!