One of my chinchillas Zoey is about the same size as my new 3 month old chinchilla. Shes 401.3 grams, and shes approximately 1 year old. Shes always been a bit small and doesn't really finish all her food, which I feed 2 tbsp of oxbow essentials chinchilla food every day as well as lots of timothy hay and the occasional treat. I can sort of feel her ribs so I'm thinking it's a good idea to feed her some critical care. Does anyone have any recommendations for me on how to help her grow bigger and healthier? Should I syringe feed or let her eat it off a spoon or from her bowl? Thanks!