the problem with Nadal is that his scheduling has been always horrible. He used to over play. Now, finally, he realized that he can't go on like that any more. Thank God, smart move.
so far he has only increased
the number of tournaments he's intending to play, and also he absolutely thinks he needs to play doubles for his "confidence".
Personally I've never believed that idea that Nadal comparing to the other players needed to work more, and needed a lot of matches to play well.
In the beginning of 2012, he could not practice for long periods and arrived at tournaments with hardly any practise, and still managed to go far in those tournaments (it was the case before the Australian open, Indian Wells, Monte-Carlo ... even in Wimbledon he did not practise at all but still destroyed Bellucci and took a Rosol playing the match of his life to 5 sets).
This idea is in his mind and from his education, and atm he surely needs to be reassured but he could perfectly do it more cautiously, avoiding to play doubles, playing one less claycourt tournament, imo.
As for Roland-Garros, my opinion is that Djokovic can perfectly defeat a very good Nadal in this tournament contrary to what some think (Fed helped Nadal tremendously in Roland-Garros 2011), then a weakened Nadal even more and it just seems reasonable to me to put Djokovic as the early favorite for Roland-Garros at the moment