No, sorry about that. Amber needed the computer...
I was attempting to say that slightly low or slightly high ph (just enough to start causing lockout) can look like overwatering.

If the peat-based medium (potting soil) has no buffers, you either have to add lime or similar to the mix, or raise ingoing water ph. If buffered, usually the ingredients list will include lime, limestone, or limestone dust. At least in the mixes I use.

If you have an accurate ph pen, you can look at your run off ph to make this decision easier. But since he only has the color-coded ph drop test, he can't ph the runoff accurately. (the tinting of the runoff skews results)

Consistently overwatered plants tend to develop root rot. Smells like low tide in Newport Harbor. (yucky) This is a fatal condition if not addressed. Let the roots dry between waterings.