Tips on Anniversary Trip?

I went to Japan in 2019 and I believe a lot has changed. Before, my family and I bought the JRPass for our trip, but this time I am going in August as part of me and my partner's wedding anniversary trip.

Here's the planned itinerary:

Tokyo > Mt Fuji (Shinkansen)

Mt Fuji > Mishima (By bus)

Mishima > Osaka (Shinkansen)

The JRPass is very overpriced now, is there any way I can get single trip tickets, and how much they are if you know? Thank u so much!!

by WiseSpace2169