I would not follow those steps.

Actually, Baking Soda will raise your T/A more than your pH. It's generally not for raising pH.

The correct chemical to raise both is Washing Soda. Arm&Hammer makes it and it comes in a yellow box in the laundry section.

Baking Soda is Sodium Bicarbonate. Washing Soda is Sodium Carbonate, a different chemical.

However, if your raise your pH with Borax, you will see your T/A rise as well. That's because the measurable level of T/A changes with pH.

So, before you go gung-ho to raise what's already an acceptable T/A level, first use Borax to adjust your pH to about 7.6, then check your T/A again. You may find it's now over 100, and if it is, there's NO reason to raise it.

Carl