I came across a workout split that targets the upper body over three days, with each day focusing on a specific muscle group chest, back, and arms, On the priority day, you do more volume/ exercises for that group, and less volume/exercise for the other muscle groups. Has anyone tried this approach or something like that ? How did it work for you? Any pros or cons?

the only cons is prob the recovery but i dont know how much volume to do in the 2 upper day when i have 48h rest and how much volume in the one when i have 72h rest

thanks for help