Best guess is that both camps are already training because their forecasted date is approaching fast, they only have less than 2 months left to prepare and train. Maybe that's the same reason why they are so silent these days after we received an information that they've already reached a deal.
They will only train if the fight is already official, there's no reason for them to train hard with their team if there's no announcement yet, unless they know it's going to happen and promoters are just waiting for the right time to announce, what I'm saying is, if they start training for nothing, they will just be wasting money.
But this fighters are elite, and they have to stay in shape even at off season. And this is the secret of some of the best of them like Floyd and Manny or even Hopkins during his prime. This boxers keeps themselves in around their fighting weight by maybe doing some like trainings at home. Floyd and Manny loves to play basketball.
And so when the official fight is announced, they will just shift gears and focus 100% on the training itself. So they are not wasting money, they've just trying to get the edge.