Like if you have extra protein intake one day, less the next, etc.
Does it matter if it’s pre or post workout, on a day you don’t work out, etc?
The timing throughout the day will matter a little bit, but not to a large extent. Day to day will matter a little more, but you also aren’t completely screwing yourself and your progress by going under one day and over another. But once you get into larger discrepancies you have would start to have much more noticeable effects. Like you wouldn’t want to eat low protein all week and then just eat 400 grams on Sunday to try to make up for it.
It’s best to consistently hit your macros of course, but don’t stress over slight variations too much.
As long as your weekly consumption averages out to your daily targets, you’re fine. In fact, many people prefer cycling higher and lower days throughout the week.
Timing really doesn’t matter very much for the average person. I’d leave that to the elite athletes and fitness competitors, and just focus on your weekly targets.
It’s mainly your overall macros that matter, but if you wanted to be pedantic then.
Your pre and post workout shouldn’t be separated by much more than 5 hours. If you train fasted then it’s more important to have a decent post workout meal/shake.