It's already too late, he's not turning back the clock.
Doesn't mean he can't win a fight or two with a haymaker, but he hasn't been elite at LW since 2016.
All things considered, I'd argue he dodged a few bullets and maximized his potential in terms of in cage success. The RDA fight got cancelled and looking back that was probably a blessing in disguise, he got subbed by Diaz but atleast there was the welterweight excuse. He ran it back like a champ and got the hard fought win, then came back and starched one of the best LW's in the world (alverez).
The fact he got an instant title shot at LW and took advantage was huge for his career. He had a good run but ultimately he fell off due to ego and lack of discipline, post Aldo he really lost his mind. Once the "El Chapo" stuff started, that was the beginning of the end.
He's a skilled semi-versatile striker with good power and good speed, in addition to decent grappling both offensively and defensively and a previous really sturdy chin. Good fight iq and a good understanding of cage control, but he was never going to age well in this sport. This is just the natural way of things.
So to sum things up, his future is back to back losses for the first time in his career, potentially retirement or some rough losses on the way down. With some good moments and big events along the way.