Hypoglycemia

I was diagnosed a couple of months ago with hypoglycemia. Basically, around 4-7pm I often get kinda jittery, sometimes light headed, agitated, have hard time focusing, etc. Tonight and last night around 6pm, I checked my blood sugar to find that it is 70. That isn't crazy low, but I think that its too low for during the day. I don't know enough about all of this. But yesterday, I ended up laying on the floor for about 15 minutes crying and barely able to move.

I made a follow up appointment with the campus dietitian and will go again to acupuncture because I'm just not sure what I'm doing wrong. Probably stress is a factor. I'm cutting back on my alcohol consumption and have been careful about minimizing my consumption of sugar and white flour. I'm really struggling to find afternoon snacks that I can eat - a lot of granola and energy bars have tons of sugar; I'm lactose intolerant so can't have cheese....sometimes I'll have a hard boiled egg and a banana or something - but I want something super portable and easy for when I'm not at home. Any ideas?