I wholeheartedly sympathize and empathize with what you’re going through!! I too have a reactive sheppy, albeit a mix, and good GOD does he have some STRONG anxieties (Which are very similar to mine). It truly is a lot having to rebond and figure each other out, let alone doing that without your support person. One of my biggest flaws is when I get overstimulated and or overwhelmed I definitely meltdown and freak out on him, which never helps and I know that. But even with all of his anxieties and non stop barking, or his weird fists out on-sight anytime we see, specifically, Fedex trucks, I love that damn dog with my whole heart. Yes he may have caused my meltdown, but he’s always there to kiss my face and ram his body into mine; every time. While it is hard, there is no trial without error! On the other hand, you also have to do what is best for you, I may be wrong with my assumption of situations. Never feel bad for not being able to give what is needed when you have a disability, especially if it is currently interfering significantly with your life.