Oral hypoglycemics Confusion

have a question -- need advice -- some of the diabetic stuff is still really confusing. I had a patient last night, was sent out to the hospital at 3:30 -- is on Metformin and Glipizide which he was to get at 4:30/5 before dinner. His meds were not sent with him and he did not get the metformin or glipizide. He was back at around 7:30 -- he did not eat dinner. I tested his BS and it was 112. Spoke to my supervisor and he said not to give him the metformin/glipizide, worried about him bottoming out. He was eating ice cream. I agreed, seeing he didn't eat that much, but I also didn't feel like his sugar was that low, plus he was having a snack -- or it warranted a call to the doc. (and he was supposed to get the meds at 5)

Advice?