You know yourself best. I also lost the same amount and decided to refeed yesterday with a feast, and I still lost a pound after. Personally, despite the founder telling you to tough it out usually lol, I think it’s okay to do ADF / rolling 48s or 72s then refeed. So long as you take care of yourself and fast you’re good! I feel great after eating and now I’m coasting easily into a 20ish hour fast. Planning to do more! Good luck :)