New pool owner, vinyl, approximately 27,000 gallons. The "rep" from my pool installation company came out to give me pool school. I had my Taylor test kit (which impressed him) and he commented that my TA was lower than he likes or something, and so he put in some "TA up". He also had me turn up the automatic chlorinator with trichlor pucks because my FC was low. Two days later, I check, and now I have

TA-150
PH-7.4
FC-4.2
CC-.2
CH-170
(forgot to test CYA but it was fine two days ago)

I'm so mad at him because I knew TA was the hardest thing to drop if it gets high!!

Could it drop on its own gradually, as we use the pool? Right now it's opened but the water is cold (58 degrees) and we are covering it with a solar cover hoping for warm weather to eventually arrive. Also, as long as the PH stays good and I don't get cloudiness or scaling, do I have to mess with the TA?