Sure it seems to save time to pressure oneself to do fewer pushups per day, so there is less pressure in that regard, yet I am thinking that it still seems to hurt just as much and there might be some losses when the number of sessions are less urgent and maybe even having flexibility to have fewer than 5 sessions per day, and maybe as few as 2 sessions per day, and/or the quantity of pushups per session might be reduced... but yeah I am still feeling it out, yet part of the actual activity changes for me has been attempting to feel less pressure by allowing myself to do fewer sessions and fewer pushups per session, but I can still end up feeling behind because other activities come about, and then for some sessions I will still feel that I will need to do more pushups for a  particular session rather than fewer pushups in a particular session..

Many of us likely realize that for any particular pushup session, it can be really painful to get started with doing the pushups, so there is a bit of a benefit to being warmed up before really going at it... do a set of pushups and then do another set a short time later, such as an hour later or maybe less might feel better than having 6 hours between push up sessions.

I know that there are guys that try to compress their pushup sessions rather than spreading them out during the day, so there can be some advantages in that, too.