i say just go by how it feels, if you feel no soreness, then do them everyday. If it feels a little sore........... still do them, just a little lighter. If its anymore sore than that, i guess it would be smart to take the day off.
A few times a month for the past few months I do some hard wet jelqs and get great gains. A hard sessions give 3 days rest. Normal session you should give a day rest. 3 days in a row is over doing it. For me anyway. Goodluck.
Like DLD says, listen to your body. I think he said that anyway, lol. If you feel sore, don't do anything that day. There is no rush in this Penis Enlargement game. If you feel like you can do 5 days in a row, do it! There's really no right or wrong here.