Four hours should not be enough to trigger low blood sugar for most healthy people. You should be able to make it to close to 7 hours before a blood sugar drop. But, if your previous meal was not adequate to replenish energy levels, like having an inadequate breakfast then skipping lunch, then you are setting yourself up for trouble.

But, the issue may just be how your adrenaline system responds. It may be more sensitive now.

I learned that we can train our body to misbehave.

I have dealt with reactive hypoglycemia for over 40 years, likely because I conditioned my system to misbehave by eating poorly, especially skipping breakfast. Then, I would grab intense carbs at lunch. I learned I need to be disciplined to eat breakfast to stop the blood sugar roller coaster and the on and off jitters and moodiness.

When I started with paroxetine, things got bad. My blood sugar could drop to as low as 45-50. 90-100 is a normal level. My doc had agreed to me poking and checking to find out what was happening. I don't think others need to check their blood sugar levels. I was a unique case and had some severe symptoms likely tied to how my system was dealing with the paroxetine. I had to be more disciplined to eat properly. I was not bad. I just was not as good as I needed to be. I learned to have munchies ( nuts, etc) available. I'd eat 200 calories or so between meals.

I bet if you look at your whole diet, you will find ways you can improve it.

I don't have any problems at all anymore.