How the hell do you say Eevee’s name?

Of all the original 151 Pokémon, Eevee’s name might just be the easiest to pronounce. E-vee. Eee-vee. It’s exactly what it looks like. Or so I thought, until I started playing Pokémon: Let’s Go, Eevee!, where I listened my little fuzzy friend pronounce its own name as eh-vie for 30-something hours. Have I been saying its name wrong? Is Eevee saying its name wrong? Do pokémon have accents?
Pokémon: Let’s Go is modeled after Pokémon Yello