on pic 3 on the right of pic ii see purple veins thats generaly mag deficency to me if not in your nutes put it in there ,if its in there flush your plants nutes lock out and also the temp should be 76 degrees .
if soil was fertil why add more nitrugen replant with different mix quick or you mite not be happy very much longer because i not sure if you can flush it good enough to stop the process
depend on the temps if one fan was still work it would have to be in the 100 or so mark to cause that in the room because the lower braches are druppy to, i would flush with water and stop using the blossum blood if it was not that hot in there
the bigger pot is going in rite derection need more soil a lot more light and stop watering so much with proper cotainer and soil amount once every fourth day or when soil is dry about 3-4 inches down, i know its not proper soil for cannibis but mirical potting mix works pretty good ,not soil...
in my opion you are to late,i would cut the buds that are ready and leave the rest to see if the others buds mature keep light as close as you can wiithout it gettiing to hot .hold your hand rite on the top of plant if hand is ok then plant should be fine to
yellowing means lack of nitrogen do to not enough nitrogen in the feeding,or nutes look out ,or end of there life cycle to me they dont look ready for harvest so if you fell they are getting proper nutes then flush them with just water to clear out the salt build up and when need water again go...
to small of plants need to get bigger a take lower braches more hormones there for roots to start and between two set of nodes you cut on angle the best thing for you and your freind to do is to watch it on the internet to see how to do it there are a lot of little different things to do to help...