Kind of depends; but if your going for a single battle, use the first one. If you want a good teammate in doubles then go for the second strat. Obviously you don’t have to use these move’s, I just used them to distinguish the different ways Galarian Weezing can be used.
Toxic Stall
Nature = Careful
Ability = Levitate
Item = Mental Herb
Moveset
-Toxic
-Rest
-Sleep Talk
-Play Rough
Supporting Sweep
Nature = Modest
Ability = Levitate
Item = Black Sludge/Muscle Band
Moveset
-Aromatic Mist
-Defog/Toxic Spikes
-Sludge Bomb
-Dazzling Gleam/Dark Pulse