I have a 9 inch springform pan. How much would I have to adjust the baking time by using a 9 inch pan instead of an 8 inch pan? Thank you!

I used a 9 “ springform pan and I would say that the cake was slightly shorter because of the extra inch but still amazing presentation and taste. My new fave recipe!

I would go by the visual cues (always a good rule of thumb, since so many factors can cause timing to vary), and just check it a bit earlier. There are a number of people in the comments who've used 9" pans with success!