If we do something “zizerlweise” here in Austria, then we will do a task bit by bit. Sometimes it is good to work off a little bit, that is, in small stages, but with a proofreading that is different. Again and again I get requests with the request, a comprehensive text (for example, a book, a master’s thesis or dissertation) to copy by chapter.
The reasons are different: Either the author is under great time pressure and to gain time, he wants us to work in parallel. Or the writing project is going on for a long time and the author wants to proofread sections that are finished from his point of view, because that feels good.
If you only see parts of the puzzle as a lecturer
From the point of view of the lecturer, the considerable proofreading is not optimal. The lecturer has at no time all the work in front of him. He always sees parts of the puzzle. As soon as a chapter is finished, it already wanders to the author. In this way, it is impossible to really 100% on the uniformity of the manuscript (spellings, citation style, etc.) to pay attention.
What that means for you
It’s best to send me the complete manuscript for editing. Otherwise, you have to accept that the editing may not be completely consistent. As a further alternative, it makes sense that we read the text again at the end after the chapter-wise editing. Especially for manuscripts to be printed, this procedure is worthwhile, but of course it is also more expensive, because an additional correction gear is required.
Incidentally, the term “zizerlweise” is colloquial. In Europe one would say “gradually”, “in small pieces” or “bit by bit”.