help?

i'm at a loss. i was diagnosed reactive hypoglycemia a few days ago and given a cgm. he told me to do low carb high protein, which i've been trying to be really good about, but no matter what i do i still crash. this morning i had egg whites, steak, and lite yogurt with some protein granola and dried cranberries and i still crashed right after. my cgm is consistently 15-30 points lower than my finger so i plan on calling my endo again monday to see if i should get a new one, but it still shows my spikes and drops. any advice? am i doing something wrong?