You are killing it due to a lack of water and too much fertilizer. More food does not make up for too little water.
It needs fertilizer two or three times A YEAR, not every week!!!
It should be potted up at this point in a 3" plastic pot with long fibered sphagnum moss. The moss needs to be watered well and then watered well again as it approaches dryness. No sunlight ever. It should be grown shaded.
The lower leaves are wrinkled because of water starvation.
