Does it really take 3500 "extra" calories to gain a pound? I need 1500 calories normally. That's what my body burns off. But I just don't understand how it really takes 3500 calories to gain a pound. That would mean the most anyone could gain is like 2 pounds a week and even that would require eating 1,000 calories more than usual. So I just don't understand. You see all these people who are overweight and trying to lose weight but they obviously didn't get there by gaining only 2 pounds a week. I'm just talking about simply fat gain, not muscle.
I'm 5'3 and was 120 for the longest. I dropped 10 pounds in a month and since that was possible, my mom thinks I can easily gain 10 pounds in a month. But I just don't understand how. I eat 3 meals and a snack. But I consistently stay at 107.5/108. I'm glad though since several weeks ago I was at 102.5. However, that was after I got sick with a virus. Prior to that, I was at 107.5/108. So I feel like I've made no progress. And what reallt scares me is the possibility of getting sick again cause then I'll have to start all over again. Does it really take this long to gain weight?
I've been eating around 2,000 calories a day but I just feel like weight gain shouldn't take this long. At one point several years ago I was at 170 and went up quickly. 150, next thing I know 160. It wasn't a pound or 2 per week. I just don't understand what I'm doing wrong. How can I put this weight on quickly?!
I don't know if this is part of the problem but I don't eat anything until 1-2pm when I wake up. I sleep from 3am until 1-2pm in the afternoon. And the last time I eat at night is right before midnight. But I still eat 3 big meals and a snack, just at weird times.
My confidence is lowered cause my face is so sunk in and I have stick legs

Please help! Thank you!