I usually download tons of otome games all at once and keep a pile of resources saved up. I only pick them up to play whenever I feel like it. I've tried so many games, yet very few have I actually finished all the way through.
If I play an otome and then have my attention captured/diverted by a different otome game then I risk losing my motivation to finish the original one that I had been playing at the time.
Hence, it's definitely best to only focus on one until I'm actually finished with it.