Cleavers and sticky grass are the same thing. I must admit I don't feed too much of it, only because of what is in this linkThe first one is Cleavers and the Second one is Sow Thistle. Both are very good and still around at the moment.
cleavers can be soaked in water over night to address the lack of moisture problem
I do so with my own, although it shouldnt be fed excessively like most foods simple things can be done to address the negatives of some of the foods
p.s I don't keep tortoises so I understand if no one wants to listen to that.