Hi babymommy,
Your little one will be fine once she gets used to the newplan. That's why I always leave the timothy hay for Tucker aswell. You want to avoid overfeeding Baby too because an obeserabbit isn't a healthy rabbit.
You'll find various information as to how much to feed your rabbit. I've listed below some references to this.
[align=left]I'm hoping that if you're going to feed baby once a daythat these portions might help you figure out how much at a time sheshould be getting. Baby will adjust, just keep her stockedwith timothy hay.
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[align=left]-Carolyn
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Choose a fresh, good quality pellet. The House Rabbit Societyrecommends a minimum of 20-25% fiber, around 14% protein (with noanimal protein), and less than 1% Calcium for most house rabbits(spayed/neutered). For adults, the amount should be carefullyregulated, depending on the size (weight) of the rabbit. As a rule,give about 1/4 cup for rabbits 5-7 lb, 1/2 cup for 8-10 lb rabbits, and3/4 cup for 11-15b lb rabbits. Baby rabbits can be fed pellets freechoice (available at all times), decreasing to 1/2 cup per 6 lb. ofbody weight by around 6 months.
http://exoticpets.about.com/cs/rabbits/a/rabbitsfeeding.htm
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If you aresupplementing a hay diet with pellets, avoid packaged pellets thatcontain dried bananas, nuts and seeds. These products are too high insugar and carbohydrates, and can cause obesity, diarrhea and otherserious digestive upsets. Limit your rabbit to plain, fresh-looking,dark green rabbit pellets, giving approximately 1/4 cup per 5 lbs. ofideal body weight per day. Buy pellets with a fiber content of no lessthan 18% and only in a quantity that you will use within one month.Store pellets in air-tight containers and keep away from moisture.Discard pellets that are old, moist, orbug-infested.http://www.rabbitsnmore.com/Rabbits_as_Companions;_Educate_Yourself_before_Bringing_Bunny_Home_Feeding_your_Rabbit2.cfm[/font][/align]
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[align=left]High quality rabbit chows, pellets, and good quality hay(such as alfalfa, grass, or clover) make up the rabbit'sdiet. For rabbits less than 1 year old, pellets and hayshould be available free choice, which means the rabbit is free to eatas much of each as it wishes. For animals over 1 year of age,hay, which provides fiber, should be available free choice and make upmost of the diet. Pellets or chows can be offered atapproximately 1/4 cup per 5 pounds of bodyweight.Over-feeding pellets to adult rabbits is a common cause of disease.While rabbits can eat any type of hay, alfalfa hay is too rich to bethe only source of hay; other grass hays are preferred.http://www.pethealthcare.net/html/body_feeding_your_rabbit.html
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[align=left]7 months - 1 year old: introduce timothyhay, grass hay, and oat hays, decrease alfalfa; decrease pellets to 1/2cup per 6 lbs. body weight [/align]
1-5 years old: Unlimited timothy, grass hay, oat hay,straw; 1/4 to 1/2 cup pellets per 6 lbs. body weighthttp://www.rabbit.org/faq/sections/diet.html#young[/font]