I'm also doing IF but the 16\8 version. How many kilojoules are you eating per day?
I don't know, not usually that much.
I have a protein shake when I get home - I'll have to check, but I think its something like 250 calories. I have that at 4:30PM. Then I have supper. Supper generally consists of 300g of meat of some sort, such as chicken schnitzels, and a large green salad, with olive oil, vinegar and salt. Don't know how many calories that is - maybe 1000 or so. Googling around suggests that 300g of chicken schnitzels would be around 900 calories, and the salad really won't be much, between 100 and 200. Then another protein shake, probably also around 250 calories. I use 2 scoops each of nutritech whey and nutritech casein, so 4 scoops total, around 45g of protein. Plus a few grams of fat and carbs in each shake.
And I have coffee with no sugar, but a little milk, throughout the day.
I exercise when I have the time, generally 4 times per week. Mostly weightlifting, can't do any jogging because of an injury.
Total calories probably around 1600. On weekends I eat more obviously. But even then, I'd be surprised if I ever eat more than 2500 calories per day.
Results: I'm the leanest I've been in over a decade, and its easy for me to keep up.
EDIT: I should point out, I do 16/8 on weekends and 20/24 during the week. I like the convenience of not having to eat or make breakfast or lunch during the week. On weekends, I like to break my fast at around 12 or 1.