Perfect wavelands are so nice.
BraveGrunt
Sounds like you practice a lot of the same stuff I do, I find dedicated timed practice helpful. Since I'm really new to the game here is what I do on my own.
FD - Two minutes of perfect waveland
BF - Two minutes of platform perfect wavelands
DL - Two minutes of NIHL, shield drops and general platform fun
PS - Two minutes Ledge tech, spider drops, anything that I feel that needs work using the ledge because of the camera angle
YS - Two minutes Pivot training, tilts, b-air, all that good stuff
FoD - Two minutes of edge guarding practice
FD - Two minutes of comboing a different, random character that you don't normally face so you learn something new
Then I go into practice mode and practie Motion sensor mine teching for 2-5 minutes and then boot up Fox as an opponent for 5 minutes of No DI chain grabbing and then 5 minutes of DI behind chain grabbing.