Got dizzy once and took some sugar. Still eat sugar snacks but way less than before. Usually a small meal and snack at lunch, main meal and snack at dinner, sometimes two snacks. Cut sugar pretty hard at first so it was easy to notice what I needed.
Try hard-boiled eggs, rotisserie chicken, canned tuna, cottage cheese, Greek yogurt, protein shakes, berries, cheese cubes - all require minimal prep. Meal planning apps really help when deciding what sits okay on your stomach.
stick with plain glycerine suppository. most advice here prevents constipation but doesn't fix it. adding fiber when already blocked is like flushing more toilet paper down a clogged drain - makes it worse. clear things first with a suppository then add hydration and fiber to prevent it next time.
Happened to me once. Nicked a vessel and blood contaminated the vial so I had to toss it. Switched back to syringes after that. Probably user error on my end but either way I'm sticking with syringes for now.