Pokémon Sleep has kicked off its 3rd Anniversary X campaign, giving players the chance to earn Poké Biscuits and Turtwig, Chimchar and Piplup incense by completing activities on X. Participants can collect points by following the official Pokémon Sleep account, posting and reposting with the #PokemonSleep3rd hashtag and completing other campaign actions. A Global Challenge is also underway, with additional rewards becoming available if posts and reposts using the hashtag reach 1 million during the event.
Source: Official Pokémon Sleep news and PokemonSleep.net
Nintendo & Pokémon Blog 