If you have been feeding it once a week and watering it every day I would assume that you have over fertilized and over watered your plant (if I were you).
Try leaving it alone... water it once a week (at the most) and feed it once every two (or more like three if it is now overfed) weeks, and I bet you will see a lot better growth. However, the bottom leaves are probably damaged beyond repair... but the plant can still recover.
Also, consider giving it a bigger hole or a bigger pot if its hole or pot is getting close to the "1 gallon per foot of height" volume limit. Repot it with plenty of perlite in the soil if you don't have any in there right now (1/3 perlite by volume works really well).
Lastly, miracle grow is not good for cannabis... it is okay, but it is really meant for tomatoes. Get Peters 20-20-20 and use half of what it directs you to or get Fox Farm's "Peace of Mind" 5-5-5 granules. Those both have extra nutrients in quantities that are great for cannabis.