i can only comment on the ph issue,, not the plant diagnosis
i know of near no one on here that concerns themselves with the ph coming out of the plant,,
near everyone is concerned about the ph of the water going in
in soil , top of my head says 6 - 6.5
my opinion, a major flush, dry it out and ph the water and feed going in
i use tap water that has sat for at least 24 hrs to help dissipate any chlorine
and i use mega crop nutes and fert every watering
i read you have some proper ph testing probe? important if ph is a concern
karma sent friend