The wording of Sitrus Berry is now as follows, "At the end of each turn, if the Pokémon this card is attached to has 3 or more damage counters on it, heal 30 damage from it and discard this card."
Source: TPCi Announcement (2020-01-09), TPCi Rules Team (2020-01-09)

Relevant cards

Note: All applicable cards may not be listed below.
SWSH1_182
SWSH1_182
EX10_91