I took one of the 4 mg dilaudid at around 5 pm and felt pretty decent until around 10 pm. It cut my pain down from about a solid 7 to around a 4. I took another at 11 pm (yeah I know it wasn't 8 hours as RX'd but I was wanting to go to bed) and ended up sleeping 7 hours.
Have to see how today goes. If I can continue to get 5 or 6 hours of relief out of 8 I will be a fairly happy camper.
I am still shaking my head though over what the Dr. said about tolerance.