I would expect it to be a long process. Just look how long it took for Andy to regain his confidence after hurting his wrist a few years back.
I know Aileen, but surely last week should have warmed him up. Getting to the final and all.
Getting to the final of a 250 and then losing it will have done nothing for Nadal's confidence. Also Delpo was out for a year and it took him another year to get back to anywhere near his best.