sister, what great news your T is back, that he answered the phone himself when you called (wow!!!), and that you will speak with him again tomorrow. He is really concerned about you and ready to provide a steady presence.
I think it's OK you didn't connect on the first phone call. It is sooooo hard to connect over the phone. Don't let yourself think it means you've lost ground with the relationship. You haven't. I bet it will be easier in person.
sister, please do something nice for yourself. Like maybe a lollipop or a popsicle. Or whatever you like! You deserve some pats on the back for making it through his absence. Hang in there, sweetie. You'll be seeing him soon.