I think this is in the wrong section but...

1) Novolin R is a short acting insulin (similar to Humulin R) so you'd want to eat ideally 30 to 45 minutes after injecting. With rapid acting insulins like Humalog and Novolog, the eating window is shortened to about 15 minutes after injection. Of course, these are really rough estimates and can vary from person to person, so you shouldn't be sitting there expecting to wait out the full 45 minutes before you have your meal - if you get light headed or experience hypo signs leading up to your supposed eating window then you should eat because that could very well save your life.

2) Here's a chart of various insulins and their peak periods:



You should be safe to sleep after the peak has passed. So for "R" type insulins you're good after about 4 hours but make sure you have enough carbs to cover you before in that duration.