I have a Guinea pig that has just given birth and is about to stop nursing in a week or so.They are caged together. I've been giving the baby and mom alfalfa hay for calcium. I know adult Guinea pigs cant eat alfalfa hay unless they are pregnant or nursing, so my question is can I still add alfalfa hay to my Guinea pigs diet for the baby. Or can i substitute the hay for high calcium foods like dill and just give it to the baby. I dont want the mom to develop stones but I need the baby to still have calcium in her diet.