switching from metoprolol to guanfacine? general thoughts?

Ello potsies, I am wanting to get some opinions from people who have potentially switches from metoprolol (or something similar) to guanfacine. I am interested in this because I have ADHD and despratly want to medicate it, but I am scared to try stims again ( trying adderall is what first triggered my POTS symptoms). Im not sure If i have hyperpots, on my tilt table my blood pressure did not raise much but some days I will have randomly very high bloodpressure. I worry about trying guanfacine mainly because my normal resting bloodpressure and heartrate is 106/70ish and 59-65. I know it drops some people like crazy. Let me know your experience, the biggest thing I care about is if it actually helped your ADHD because Im really struggling with it. Also if anyone here had luck with stims let me know. thanks.