Always do the easy bits first, and check them once at the end.

It is tempting to spend a lot of time crafting ones words or getting something just so, and then going back and revising it. More time efficient is to meta-write, e.g. "*** Find a better way to organize these three definitions" , which is not the literal text but a command to yourself to process that section later. This is a way of breaking up the hard parts of writing into manageable pieces and identify those few parts of the paper that really need the time spent on them. Of course, one goal is to replace every metatext piece with the desired text. And then, do only two or three final passes for catching typos that you missed correcting while writing.

Gerhard "Needs To Follow His Advice" Paseman, 2020.07.11.