I think my tortoise is underweight. He is approx 85 grams. My scale only increments 5 grams. The length of his shell is about 7.5 cms and 9 months of age. Looking around i think his weight should be around 100 grams or so. I feed spring mix. and once a week i feed zoo med grassland tortoise pellets. I know i should feed more types of greens and pick weeds. Is it okay if they are not organic and just wash thoroughly. Should i start use supplements that have crude protein? I bought repashy veggie dust from my vet but haven't used it yet.