hi there, stop overwatering and spend some money on good lights....replant as well....you go indoors and you need lots of light if you want in the end to enjoy good quality bud....there is no point ,in my humble opinion, to try to grow any cannabis plant indoors if you do not try to provide the most nessessary things to the plant....get an HPS bulb of 250 watts for 80 us dollars at www.insidesun.com.....get a 5-10 gallon pot and fill it with top quality soil for flowering plants like GERANIUM,add a computer fan on a 24/7 basis and some ventilation for air to it and off you go......this way only you will save your plant and hope for some good harvest after a few months.....if you do all that tomorrow in example you can expect harvesting bud within 10 weeks or so given that the 12/12 cycle lasts 8 week plus two weeks recovering time.....hopefully your only plant will be female....if not take a look into this to get some ideas : http://www.dutch-passion.nl/engels/female.html

I hope that helped