I used to get hungry too when I first started, but I've been trying to push back the first meal ever since I started doing this to get to 16h fast, and now I don't get hungry at all, it's all about getting used to it.
I've already walked 7Km and did some work and I still haven't eaten anything, my first meal is at 4pm, which is in 1h, this is what works best for my schedule and I'm pretty strong and healthy.
But yeah, everyone has a different body, so we should do what works best for us.
That's really amazing. It means your body has adjusted well to it and it's truly impressive that you are very active too. I would say you are very disciplined :)