Yeah, well, the water bit was the first thing I thought of, but when I looked at the pics, it looks more like you have smaller leaves because they're newer and it will take some time for them to fatten up. Just like the rest of your leaves, it takes time for things to grow out and big. You gotta be patient when things are just starting out. In time, things will be fine, and the rest of the plant looks healthy, so my guess is that you're probably okay. good luck