Rabbits don't need a full dish of pellets all the time ya know! Only growing babies need a full dish at all times. I simply give my Mini Rex(Spice & Hershey) 1/4 cup pellets per day. That sounds liek a cruel amount but my vet suggested it and it is all they need for their body weight. Oreo & babies get 2 cups per day but once the babies are full grown they will get the same amount as Spice & Hershey. How much does your doe weigh? Here is the recommended feeding chart:

5-7 lb of body wt.- 1/4 cup daily

8-10 lb body wt.- 1/2 cup daily

11-15 lb of body wt.- 3/4 cup daily

And one cup of veges per day(says in my rabbit care book). I give my rabbits breakfast(1 carrot each and 1 slice of apple each) and supper(1 piece of romaine lettuce each,1 carrot each,1 grape each....sometimes banana). Do not give her cereal since it will make her gain weight so rapidly(that's what happened to Spice, no more cheerios for her....EVER!) and human food either(Also what happened to Spice). My sister won't listen to me and she keeps giving Fudgeo garlic fingers,pizza,human food(dont worry absoloutly NO chocolate!), I tell her not to feed it to her but "she's my rabbit and I can do what I want with her!"....
Anyways that got way off topic, my point was feed her less if you aren't already, that way you won't go through too many pellets!(I get a 15lb bag for I think $4.50 canadian).....the pellets I buy are Purina brand too!