So my axolotl usually goes to the bathroom every other day, but today he had 3 giant poops and 1 small one before 2pm. The first one was a nice log but the rest were all dusty, but there was alot until the last one where it was only a little. I've had him for about a month now. And he's about 6 inches. I feed him twice a day. About 3 pellets in the morning and half a earthworm around 5 pm. Should I be worried?