Yeah you can cancel levitation with block or instant air fireball. I use an arcade stick (Qanba Q4raf) for playing MK on PC.
Btw, my MK knowledge is a bit stronger now but I still struggle to do instant air fireball efficiently, I've read It's u,b,f+3 but I cannot do it as fast as in the video which is quite annoying.
Any tip for doing instant air fireball faster ?
Thanks in advance for your future answer