Whenever I've had a longer break, including now due to my T's situation, it took a bit of easy topics to get back to the trust. It didn't take nearly as long as in the beginning, but I certainly didn't feel like diving deep right away. I usually have a few important topics that I want to bring up, but usually never do. I opt for easier, relaxed topics. I've also always explicitly said I've trouble trusting again. It somehow has always dissolved after a week or two, but I've never done anything special to get to that point. I think experiencing therapy again with him is usually enough for me.