Yes, have something like a banana, handful of nuts, slice of toast, piece of cheese etc. Make sure you have a decent breakfast before your first appointment, too.
I simply cannot go all day without food, I become very light-headed and irritable.
Nor can I - if my blood sugar drops I feel terrible and me when hangry isn't fun for punters .I have bananas, peanut butter on toast or crackers, avocado, sushi, crabsticks, boiled eggs, cheese and fruit. Also supernoodles, snickers, pringles...
Bloody hell! I'd fart like a trouper with my IBS.
Well I hardly ever don't have them all at once