Ok so for fast topspin shots it’s not so bad if you are already good at blocking it’s not much change to be able to counter these shots well. You just need to think of it as adding a bit of speed and touch of acceleration to your blocks and then build up from there. Of course keeping the shots short and compact is key and using the opponents pace to send it back rather than adding too much speed of your own, this will help you have good control and stability in the counter attacks.
Answer for How to counter topspin fast incoming Balls in table tennis
