Yes even at 500 g they can be ready so just keep feeding on your schedule and you should be ok, just keep in mind that some will gain weight and like one of mine, has not gained much even though he eats all the time. Also, dont go into a powerfeeding mode as that wont be healthy for your animal and being that theyre captive animals, you really dont have to think you have to breed by late fall, breeding for captives is different so even early spring would be ideal, unless youre on a schedule of your own. Good luck