I've been doing IF consistently for about a decade. I never needed to lose weight, I did it to improve my healthspan. This is just my experience so obviously YMMV
1) I drink coffee in the morning too. No stomach problems yet, but I'm completely dependent on caffeine. Last summer I did a 4 month hiatus from caffeine and at the end I determined the tradeoff for me wasn't worth it. The energy and focus is just too valuable, to go without.
2) If it's going well, I wouldn't worry about it. At some point your body will stop having a huge fat reserve to burn off, and you will find that your energy levels crater and recover very slowly if you exert yourself too much for a given macro load.
3) You should try an extended fast! My response to "you are skipping the most important meal of the day" is "I don't even eat every day, fasting is good for you". If they press the issue I'll tell them about fasting for 5 days and how good it makes me feel.
And extended fasts really do make me feel amazing after the fact.
1) I drink coffee in the morning too. No stomach problems yet, but I'm completely dependent on caffeine. Last summer I did a 4 month hiatus from caffeine and at the end I determined the tradeoff for me wasn't worth it. The energy and focus is just too valuable, to go without.
2) If it's going well, I wouldn't worry about it. At some point your body will stop having a huge fat reserve to burn off, and you will find that your energy levels crater and recover very slowly if you exert yourself too much for a given macro load.
3) You should try an extended fast! My response to "you are skipping the most important meal of the day" is "I don't even eat every day, fasting is good for you". If they press the issue I'll tell them about fasting for 5 days and how good it makes me feel.
And extended fasts really do make me feel amazing after the fact.