It will take him a couple of days to get over this upset, but I did it to one of mine just a couple of weeks ago - every two hours for the first day (when he had to be forced to take it, but I did not get up during the night) and then every 4 hours for another couple of days, when he was starting to take it from the bottle.
Just check that he is pee-ing and watch for any jucky stuff at his backend. His temperature is back to normal?
PS.: Is it not Tuesday today???