The above is exactly what i used to do so he got the message slowly that milk went away if he did it. He did still chew a bit but knew not to bite hard , think me jumping made him jump too judging by the shocked look on his face !
Hang in there , its the stage where lots of ladies give up,but you miss the easy bit then! i gave up at 12 mths and my son had all his teath except the big back 4 he got at age 2 by then!