I really wouldn't have much faith in Ancajas, although at one point he was very good, I think he has lowered his performance, and when I say performance I mean his physical condition, in his fights he manages to show a clear fatigue, but of course he is very remarkable,
I think on that part, it was already Ancajas camp's priority list.
They hired a new nutritionist to take care of Ancajas' diet to prevent the struggles in the preparation during the first fight with Ramirez. Ancajas shows fatigue in that first fight because there's difficulty getting the catchweight required.
Now that the camp already knows the problem, for sure that will be addressed and they will make sure Ancajas is fully in shape for this rematch.
If that's the only problem why he lost, then we can expect that he will give a good fight in this rematch, and who knows, he could get the belts and be a champion again. Plenty of time, we have over a month before we can see this fight, and hopefully the training of Ancajas will be more intense so he can have better stamina in the fight.