You can Nair his side b and if you time it right it will knock him out of it and you'll take 0 damage. if he double jumps, nair/dair depending on spacing. then you just edge hog because his Up sucks ***
If you throw/hit him off stage, and you know he will double jump , shuttle loop him.
If you throw/hit him off stage, and you know he will double jump with an air dodge, fall back, wait for the air dodge to end, and shuttle loop him.
If you throw/hit him off stage, and you know he will drop a little low so he can double jump onto the edge, do a falling nair and keep knocking him away with dair
idk