It's about time.
He should've started learning from a legit boxing coach a long time ago. Offensively he's great and don't get me wrong, he does have good defense, but he needs to work on it. He specifically needs to work on the basics in terms of his boxing/punch defense.
I hope he can improve quickly. I also hope this means he's going to get out of the predictable same old MT (Muay Thai) routine that Conor talked about because he's 100% right. I believe Conor's understanding of how MT is in terms of the movement, attacks, in and out rhythm and such is why he won.
It's also because of Aldo's mistake with the basics of defense, too. He has good head movement and overall good defense in general, but he often makes the mistake of failing to bring his hands back to guard his head after throwing a punch/combo (Barao is especially bad did it. Many Nova Uniao fighters are, for some reason).
So let's hope Garcia can help Aldo get out of that routine and stop the bad habits with his defense in the pocket or when he exists the pocket. That's easier said than done, though, so I wish him luck.
Nothing but hespect for Aldo. I'm really looking forward for his return. FOOK the haters. He's the GOAT FW and one of the GOAT MMA fighters in general.
Good luck, Hozaay!!
/rant