Strategies against allrounder

my opponent is an allrounder, and a good one. he has a great backand push and counter-hit/topspin and his forehand is a great as his backhand. I can sometimes get him offbalance and finish with a smash, but he always checks his form and makes sure that doesn't happen again. also, he serves really short, making it diffuclt to stop him attacking after that because i don't have a great flick or short push. i sometimes push long and really fast right into him, get him offbalance and then smash, but it works 4 or 5 times. i'm having trouble thinking of new strategys and sometimes it takes a long time to warm-up. it might be 6-0 (points)before i could start getting points.