I apologize if I pointed you in the wrong direction. Looks like the more experienced growers are in consensus that the plant is over-fed, in which case giving them more is counter-productive. I tried to sound a cautious note because 1) I'm a newb, 2) the plant is young and they generally don't need nutes so early, and 3) I don't want to kill your plants.
It's impossible to give directions on the bottle for a pH product. The only directions you need for using a pH up or down product: get a pH meter and some calibration solution. Don't buy the cheapest meter you can find. Decent meters start at about $80. It'd be great to buy calibration solutions for all 3 points, but I think single-point calibration is good enough. Most of the things we're measuring are pretty close (should be anyway) to the pH 7.0 single point calibration standard.