Honestly, I think that the best advice is to get close to them. Taller fighters have the reach advantage, which in turn makes them most comfortable when they’re outside of your range / further away; when you get close to them, it puts them in an uncomfortable position, as you will have the advantage there. Really focusing on entering and exiting range will help you a ton.
My favorites are to punish the body and legs once you have entered the close range distance. I don’t really love attacking the head as you have to reach more to hit the head, and it can definitely open up some holes in your defense if you are reaching.
