You can stop tenten teams by immobilizing mabui in first round. Only mabui. It is true water team will heal a debuff in the same rpund it is casted, but mabui is move 1. If she is inactive for a blink of an eye, she will miss her turn.
You do have to kill her before round 2 though. And finish the fight before round 3. Or you could use Cee to remove buffs from enemy team. Without them tenten isn't all that scary.