I have four little seedlings growing from found seeds. They're growing in a south facing window in organic miracle grow mixed with perlite. However, one of then hadn't grown in weeks. It has its cotyl leaves and one pair of true leaves developing. However, these leaves began developing at least two weeks ago and have yet to grow or even unfurl. It's currently sharing a pot with another plant which is doing great (two pairs of triple leaf sets (Also can anyone tell me if it's normal to have three-leaf sets instead of five-leaf?)). Both plants have plenty of room to themselves. My seedling isn't turning colts, drooping, shriveling out anything else alarming. It's just not growing. I don't water until the top layer of soil is dry, the soil and pot have good drainage, and my other three seedlings have taken off. Can someone help? I'll try to post pics later. NOTE, I'm not looking for advice on optimal grow. I'm really just growing them as houseplants and don't care about making them grow quicker or have a bigger yield.