What is the best way to refine the application if the latest version was in January 2020?

Question

android studio

If I immediately change all versions to the current ones, as the studio suggests, it simply does not start and there are not just a lot of edits, but a lot ... including billing.

How to do it not so abruptly? Maybe there is some recommended set of versions that it is better not to jump over ...

Answer 1

In order not to do this abruptly, you need to do it gradually, namely, 1-2 libs.
We made the latest version of one lib - corrected the code taking into account innovations, moved on to the next one.
If suddenly, the volume of changes of even one lib is too large, then perhaps it makes sense not to upgrade it at all.