Almost every tortoise grows at a different pace. As long as he seems healthy otherwise (Eating, drinking, pooping and walking) there shouldn't be anything to worry about.Oh hey. I also have a marginated tortoise that's just about a year old. But he only weighs about 67g. I'm a bit worried that he's underweight. I also got mine at 20g. How much do you feed yours? Is it just a case of every tortoise is different?