Managing eating window

Hey. I want to start maintaining 16:8 gradually, but I’m not sure how to manage it. I start working at 9:00, so I’m having breakfast somewhere between 9:00-10:30. At 10:00 I’m already quite hangry, plus I don’t feel well (dizziness, stomach cramps or nausea), I assume from low sugar levels. So I can’t skip breakfast, otherwise I can’t work productively until I eat. I finish working at 18:00 and go to the gym. I’m usually back home at about 21:00 and am really hungry again, even if I had my dinner at 17:00-17:30 (not later, because I can’t exercise on full stomach). Again, if I’m not eating a normal meal when I come home, I’ll grab something before going to sleep at 23:00, since I’ll be hangry and not feeling well again. So I also can’t skip dinner… And I only manage to maintain something like 13:11 or 14:10 at best. Maybe someone here has similar lifestyle and can share some tips? Thank you!