On my P.C. savegames are located at;

C:\Users\George\Documents\Larian Studios\Baldur's Gate 3\PlayerProfiles\George\Savegames\Story


Do I have to start over after each new patch?

I'm not sure about future patches, but you need to restart for this particular patch.

I kinda suspected that. t h a n k s

yes each major patch that adds to the game needs a restart... these are always clearly marked by Larian

hotfixs don't require a restart and you can have more than 1 profile so you could make george2 to try new builds without upsetting your current game