I edit chapter-wise. Actually, scene-wise since I use yWriter, which is a great tool for me. Much better than a large monolithic word file, at least for my writing style.
I first write, then two day later read again (and weep), and only after this start to correct grammar.
When writing grammarly is active, and if the sentences seem very strange, I do a crosscheck at deepl.com/write. It is the only (free) AI tool that keeps most of the sentences unchanged and goes mostly for the bad guys. Since I use yWriter, I export a finished chapter to RTF and then Word have a final say on things missed before.
If I do too much editing in Word, then the chapter goes back and is exported a second time. When I am writing, my creativity overrules all orthography and grammar, unfortunately.