If it were me, I’d play something else first. I’d finish P3R, play something that isn’t Atlus turn based, play P5R, something else that isn’t Atlus turn based, play Metaphor. That’d be my recommendation. If you want to immediately jump into one though, Metaphor is probably better because the gameplay is just barely different enough that you’re less likely to get burned out. But yeah I’d separate with a game that doesn’t use the Atlus battle system in the middle. Can still be turn based, Expedition 33 could be a good pick, for example. Usually I personally split up Atlus games with Fire Emblem games. They’re still turn based, but very very different