When I was training George (R.I.P) I used pellets. What I did was, instead of feeding him in the morning(like giving him his bowl of pellets to eat), I would pour out the pellets into the bowl and take 1 or 2 pellets each time, and learn him that way.. after training I would give him the rest of his bowl. Then he wont be over fed
________________________
The following is adapted from :
http://www.fishpondinfo.com/rabbits/feeding.htm#pell
The basis of most rabbit diets is a good rabbit pellet. Then comes fruits and vegetables. There are too many to list. If you visit the sites on the rabbit links page, there will be extensive lists. Do not feed iceburg lettuce or large amounts of other lettuces. Favorite bunny foods include carrot, broccoli, apple, pear, cucumber, squash, zucchini, and small amounts of kale, grapes, cauliflower, spinach, collard greens, green beans, parsley, and other fruits and vegetables. As treats, I occasionally give them cantaloupe, honeydew melon, strawberries, wine berries, black berries, etc. The key is to give lots of variety and not too much of one thing (especially fruits and leafy vegetables). Also, in rural areas free of grass treatments, grass, dandelion greens, clover, and many other lawn plants cannot be beat. Again, only give these in small amounts and avoid a few poisonous plants. Also, avoid giving too many greens to young rabbits. Many say not to give any greens if under six months old but my vet and I disagree. After all, feral and wild bunnies would eat nothing but greens after two months.