Guix home package confusion

[Tangonov]

I am trying out guix for the first time and feel like I may have 
jumped in head-first into the shallow end of the pool.

I had started out with using guix package for my packages and 
updated my env for around 30 generations. Then I discovered guix 
home and thought "hey, that may be better".

I set up guix home following the documentation and it created my 
first home generation and completely re-installed my packages.

However, after subsequent changes to my home config, a guix home 
reconfigure is now attempting to re-install (and build) my 
packages all over again, despite never having run a guix pull.

I tried to "undo" the initialization of guix home as I feel like I 
maybe should stick to the "older way" for a while longer while I 
get the hang of Guile Scheme and try not to change too much at 
once. I have been unable to revert my initial revision, or find a 
clear path back without doing something dramatic.

With all of my history in mind, I have 3 questions:

1. Is there a supported way to apply incremental changes in guix 
home, without re-doing (and re-compiling) all of my software?
2. Is there a supported way to revert back to just using GNU Stow 
and guix package?
3. If I can be happy with guix home, is there any supported way to 
remove potential bloat from having run guix package for 30 
generations?

Thanks for the incredible software and help, if you're able.

--

- Tangonov