Have i screwed this up ?

i ve been growing this plant for 14 weeks on at 12/12.
the tric s just dont want to change to amber.
the plants unfortuneatly been growing in a cupboard under the sink hence its shape and poisture.
should i just harvest it now?
i ve had comments saying it looks starved, however i ve been only feeding it water as i want it as natural as possible, plus i was hoping to harvest now. what did they mean by it looks starved?
if it is starved, which by the way i m not disagreeing with, i m new at this, it may be the reason it has nt grown much in height in the last few weeks as i might if expected
what has gone wrong, and what should i do in the future?

looks fine should be done soon. It could be healthier but at this point it doesn't matter.