I think you have some time yet since it usually takes a while for the yeast to settle (the apple juice color is the suspended yeast).

Depending on the temperature, a 3 week primary fermentation could be a little fast. Have you taken a specific gravity reading at the start? If so, you probably want to take another one now to see whether you're getting close to completion or you have a stuck fermentation. Based on that, you will have a better idea if time alone will take care of it.