Sigh,,,The plant is fine....up pot to your final pot size soon. After up-potting, no nutrients for 2 weeks then start feeding a quality veg formula or something easy like Dyna-Gro Foliage -Pro all the way to finish.
If you opt for a veg and a bloom formula. Be sure to run the veg formula for the first 2 weeks after flipping to flowering times, Then start the bloom feed....
pH, a few words on pH in soil grows......Soil self pH's.....Metering the run off will only give you the pH of the run off, not the pH of the soil.....Attempting to accurately pH the soil will only plague you with problems and cost time and money. If you worry about soil pH....simply pH all ingoing to 6.5 and forget about the soil pH.......
When you water the pH will swing one way and as the soil dries out it swings back......If you use any type of pH meter to figure the soil pH. You would have to sample at exactly the same time every day and water at exactly the same time to get a day to day accurate reading!
Like I said, soil will self pH....add some myco's now and then - look up basic AACT bio tea and use that for the micro beasties...
Keep your soil healthy and it will keep your plant healthy.....
Your plant is fine - keep going
Doc