If there is no problem with the plants then I would ignore the ph of the runoff unless it’s way out of range. The lime in the soil raises the ph back up automatically. If you see real low ph in mucky yellow or brown looking runoff I would worry more.
Ph in soil does not stay stable. It moves throughout the range at the root zone. As they eat it raises and when fertilized it lowers.
If there are problems actually due to too much lime some o the above suggestions may help.
I always mix my soil up and break up clumps and then test it’s runoff about a week later before using to see if the bag is over limed. This caution is on the pro mix website.
And I never adjust ph of my well water. It shows 8.0 ph out of the tap but with only 100ppm of mineral content. It’s about the alkalinity not the ph.