Okayyy... But I don't think you know that Silver has chosen to never evolve... (If you did, you must have forgotten...) Check my archive @ imgflip.com/m/SilverArt for proof!
ok but the only true way to stop yourself from evolving is through an everstone, though those supposedly look exactly like normal rocks therefore would be hard to find even though they could be everywhere
I swear i have heard everstones described as looking like normal rocks
also iirc in the anime all you gotta do to evolve a pokemon with an evolution stone is touch them with one
im pretty sure the only reason the partners in the Let's go games dont evolve is because they're a Pikachu/Eevee, and the games are Let's go Eevee/Pikachu, not Let's go Raichu/Flareon/Jolteon/Vaporeon/Umbreon/Espeon/Glaceon/Leafeon/Sylveon.