There is a way to get a Shiny Pikachu/Eevee in Pokémon Let’s Go! It won’t get a Shiny Pikachu specifically, but it’ll help you find one.
LURES:
Lures help increase your Shiny rate boost. When using a lure, your chances of getting a shiny increase, which may mean getting a Shiny Pikachu/Eevee! Combined with Shiny Charm, your chances narrow down even more!
ITEMS THAT WORK AS LURES:
- Lure
- Super Lure
- Max Lure
These can be bought at any PokeMart in the Kanto region.
CATCH COMBOS
When you catch the same species of Pokémon, your Shiny odds increase. In the case, if you catch a lot of normal Pikachu/Eevee in a row, then the more change you get with getting a Shiny one! Combined with the Lures, you are 15 times more likely to find a Shiny Pokémon than normal.
I hope this helps you find the Shiny Pikachu/Eevee that you hope for. And if you so happen to find it, then congrats. I bet it’ll look AWESOME!!!