I would talk with your infusion lady/gentleman. I sometimes go into the 'shakes' from running it too fast, but again sometimes i don't. Depends on what and how much i have eaten that day sometimes too.
You can try it, my nurse lets me run as i please, unless my doc says otherwise, and now since I am pregnant, i am going to have to run it slower.
Hope this helps a bit, but I would recommend taking munches with you too. That way you have something to keep you occupied. I get hungry every time i do it.