I am biased toward over-planning. I have found your approach to work best for work I expect to take several days. In that case, actually putting together a luci

I am biased toward over-planning. I have found your approach to work best for work I expect to take several days. In that case, actually putting together a lucidchart / draw.io diagram about what service will get refactored where is a huge help. It also keeps data flowing uni-directionally (yes, compiler will prevent circular dependencies, but there are ways to make code dirty without ever hitting that). On the other hand, this diagramming does take hours and some people do fine with it. I can also do ok without it, but find it to generally be worth it, especially because I get interrupted all the time, so it's good to have a clear picture of the end goal.