I got my first sugar glider in January. I was told that she was about 4 month old. In late February early March I realized that she had 2 joeys in her pouch. She was taking care of both joeys up until last week. One is a lot smaller than the other and she wasn’t letting him nurse. So now I’m taking care of one 24/7 and she has the other. Should I be worried that the one I’m taking care of is smaller than the one she has??