Well if its a dead draw play on. He can't make any progress so try to force a trade of knights maybe? Be sure that the king and pawn endgame is drawn afterwards though.
Or you could just wait for the 50 move rule. 50 moves without a pawn move or capture and its a draw.
what can we do when someone we play doesnt want to accept draw... i am playing online game and my opponent has one pawn extra, we both have one knight and we played over 90 moves, last 30 with knight...its annoying..and he wont accept a draw..