I hear you, Keto+IF caused this for me sometimes, but it only lasted a few weeks at a time, so I would not worry. But if you do, just introduce some easily digestible carbs to reignite your hunger. (Tomato paste into sauces, has been a favorite of mine lately. Practical and cheap.)
I have the same beginning stats as you! I’m quite comfortable with OMAD now and it’s something I can see myself doing as a lifestyle, however, I really wanna try rolling 48’s and 72’s but my only concern is maintenance because I hear stories about people gaining all of it back. Have you done 71/1 before and if you have, was maintenance afterwards difficult? and how many calories do you eat in the 1 hour window if you don’t mind me asking?