What are you doing in the Alps? Is it just one day like a gran fondo or is it a multi day race, a week away where you plan to tick off climbs?
I did the latter a few years ago and mainly worked on sweetspot in preparation as I knew that’s what I would be doing day in day out for 12 days. 1-2 hours of climbing at 90% ftp.
If it’s a gran fondo then maybe the general build.
Remember that the closer you get to your target event then the more your workouts should become like your target event.