I don't see them on his timeline anymore, but his first was a response to the BYU B12 invite that was something along the lines of eyeballs emoji and hmmm I may have to rethink things, and then he responded to another tweet of the BYU win over Utah with another tweet similar that said something like, now I am really going to have to rethink things.
I think those were the first 2 actual positive tweets about his own thinking about BYU from his account that I have seen from him, until those tweets he basically just congratulated other people committing to BYU and it seemed like the P12 schools that he has offers from were the only schools he was actively tweeting about.
He also added a BYU good luck pic to his twitter wall today, that is also a first, but BYU would seem to have a lot of ground to make up based on all his previous activity and attention. Still, it is improvement for a high quality recruit, so I won't complain about what seems to be actual progress for BYU in his recruiting interest.