I would keep a mood chart for your new T until she gets to know you. Tell T what questions you need her to ask. When's the next time you see your Pdoc? could you stay on your current level of Zoloft until next time?

As for your son: Can you look into combining his meds to as few as possible, 1x a day? Then he could take it before bed. I'm so much more amenable to taking meds at night then in the morning. How much say does he get in his treatment? Why does he not want to take them? Can you have your other kids take vitamins at the same time he takes his BP meds so he doesn't feel singled out?