the required weight should not be a problem at all, because it needs work from himself and his camp. it should not be a problem at all but should focus on their strategies how to win his title back.
Unfortunately, that was the problem, reaching the required weight with no extra toll on his body.
What does this mean? His usual training regime is not enough to reach their target weight at the given time. In return, things got rushed and the moment he will now reach the required weight, he was overtrained during the process and won't be in 100% shape once he entered the ring.
But that unfortunate thing that happened during the first match should not happen twice as that was one of the key notes that his camp is trying to solve.