Kind of the same for me. My first meal is usually around 1:00 pm, and then I'm often not very hungry for dinner so I know my BG isn't down to the trigger yet. Eating the first meal a bit earlier might help with that.

I'm also tracking using the spreadsheet, even though it is not officially being used in this Challenge. Part of the Hunger Training worksheet has cells to enter the time you have your first meal and your last meal of the day, and then calculates your eating window. If I do a 20/4 fast/eat window, I'm rewarded by green shading; an 19/5 window shows as yellow; an 18/6 window shows as orange, and a 16/8 window shows as red. This is getting way ahead of things, though, since this is only Day 5 officially. I'll keep recording the times, but won't pay much attention to the results yet.