Staryed flowering under 16 hours light after a 3 month veg with no changes, then stalled bad due to light stress and potential lock out

Soooo this plant was started back in January and has had many issues since... had it and many others in the closet in an ocean forest and amendment mix... was under 18 hours light most of its life and originally planned on putting it outside about this time of year, and about 5 or 6 weeks ago reduced it's light to 16 hours to try ro acclimate it to the shorter light period outside and hopefully not induce flower once out outside... well it started flowering under 16 hours... after it had veged for 3 months...all the suots I have ran have started flowering within 6 or 7 weeks... started.flowering and then stalled real bad for a like 3 weeks so I went ahead and flushed, reduced the light hours down to like 13 hours to hopefully keep it flowering, it has since rebounded and pushed farther into flowering but is suffering from a few issues, ph is lower than I would want and leaves are starting to badly fade as well... I know it was suffering from too much light for a few weeks but I have dimmed the light and that has helped and re arranged the closet... but basically I'm asking if this is too late into flower to up the nitrogen it gets to help with the fading and issues.... it's super un healthy, and has definitely revegged for a period of time but it's come a long way forward the past week or 2 since adjusting the lights down some... supposed to be a pink runtz cross...been feeding with fox farm grow big n roots organic terp tea bloom and cultivation nation flower, also with compost tea and some epsom.salt once a month or so, some.mycorhizae and occasional molasses... this is my first indoor " photo" plant and have done well outdoor the past 2 seasons... have run a few autos indoors without.major issues... what should I do? If anything definitely under feeding as opposed to over feeding, giving it nutes once ever 2 or 3 waterings and have not given anything with much nitrogen for almosta month since it started stalling... any suggestions?