wilted, but not dead... if autos, it'll be more impactful.. with photperiods you can easily jsut get them back to full health with the cost of time and a normal yield you expect will result.
i'd irrigate with water only or a very low ppm of nutes -- this is precautionary in case the evaporation over 1 week caused significant buildup in substrate -- less likely, but be safe. Also, you'll likely need 2x the water due to extremely drue substrate. When super dry, it will repel water a bit and it'll take more to saturate the soil the first time back.
So, just irrigate them back to health... low nutes the first time, if any... if all looks good, go back on a regular feeding schedule you had before, if it was working well.
it's still green.. doesn't look crispy and falling off plant... chances are very good. as long as you have some/enough green leaf that recovers, it will recover, because it can still process light for energy.