Hi, Danielle!
I must say, Dandelion (and the rest of your bunnies), eating habits really impress me! Who would of known such little animals could fit in so many vegetables, eh?! They sure are spoiled and lucky to have a good owner like yourself!
For now, I think I am going to continue with the 2 cups of vegetables a day. Like your bunnies, Marmalade eats her vegetables super fast during the day aswell, and that is why I have now split it up in to two meals: one cup in the afternoon, and one cup before bed. How does that sound? I also should state that she does get quite the varitey of vegetables of up to 3 of the following per day: romaine, escarole, carrot tops, parsley, bell peppers, dill, etc. She also appearently likes cilantro, rappini and dandelion, according to her foster mom. Right now, the ones I listed is what I myself am currently giving her for now. I will gradually increase the amount once she settles in, especially considering how she still needs to put on a bit more weight (she was severely underweight when arriving to the rescue group I adopted her from and while she has put on the weight, she can still stand to gain a bit more).
PS - Thank-you so much for your reply, it was extremely helpful to both Marmalade and I.