Question: can you transfer pokemon from let's go eevee to pokemon go?
Answer: game. Only the Pokémon you've caught in Pokémon GO that were originally discovered in the Kanto region (as well as their Alolan variants) may be transferred. You can't transfer Pokémon from Pokémon: Let's Go, Pikachu! or Pokémon: Let's Go, Eevee! to Pokémon GO.