You could reuse the insert shot of BB-8, but maybe in reverse, at the end of the convo, and put “Leia taught me that” over that shot. Or even just the shot of Chewie putting the dagger in the bag, he’s in the same room as them.
Or, at the beginning, replace “I just transferred a bit of life”, with “Leia taught me. To transfer life.” Then onscreen, she continues, “Force energy from me to him.” I do like the thematic idea of Rey learning it from Leia specifically.

Although I also think it could be nice to set up earlier than that. Like, replace the illustration of the wayfinder that Rey sees while flipping through the book with an illustration of Force healing. Arguably that is a set up for the Rey knowing the wayfinder is mentioned in the texts too, but would the audience really question it being mentioned in the texts if we hadn’t seen that page before? Also, it is a little convenient she flipped on that page 10 minutes before it became relevant. Idk though.