It seems like you're doing really good and difficult work in therapy right now, from what you've written. The realization about "atoning" seems interesting and relevant, a new piece of the approach-retreat dynamic you have with therapy sometimes (a dynamic that I think is really normal to have).

Having sessions on consecutive days can be very useful but also very difficult, so this reaction makes a ton of sense to me in that context. My schedule works out so that I have sessions <24 hours apart about every other week--it's great because it lets topics develop more fully over both sessions, but it also feels like it raises the stakes sometimes when the first session is intense, since there's not really anywhere to hide when the next day rolls around.