YES! I get this too. If I eat something of meat protien when it comes on it usually goes away in about 20min. I also get very tired and weak when it happens. I am 3yrs out.
I will usually keep a high protein bar in my purse for times when meat protein is not readily available and it works well. My go to though if I have a choice is meat of any kind, chicken, pork, beef, seafood.

Pre op diabetic and Ive been getting the occasional low from not eating when I should be. It is kind of hard to do considering I have no appetite the first six hours being up for the day.

I have the exact same issue and I am 5 years postop. It doesn't happen everyday and it varies. It even happens after protein rich meals, usually breakfast. I don't understand it, but I know how to deal with it. It something to get my blood sugar up AND some protein. Usually nuts our a protein bar. I originally lost 115 lbs which was too much. I'm now about 95lbs down and look and feel great. Just deal with the low blood sugar occasionally. I work out 3 to 4 days per week and sometimes get the fainting feeling at the gym, but it is rare and I have figured out how to prevent it. My wife also had gbs 6 yrs ago amd she deals with it also. Just have some nuts ready to deal with thelow blood sugar. It is just a consequence and something I will never complain about. Never would have dreamed I would be where I am with my body..... and I'm 57 looking like 40....... Jim

The few times it happened to me, I realized the previous meal had a few too many carbs. Sticking to less than 20g, trying for 10g or less, and I never have the crash. Keep track of what you're eating for while and note your reactions after every meal/snack for a while. You'll pick up the pattern pretty quickly, and find out how to avoid it.
I keep nuts and string cheese on hand for when I have one too many bites of carbs, or when my meals get pushed back due to meetings and such.