I am also in the process of switching TS and wanted a 'seamless transition' from one to the other because I did not want to put my therapy on hold or feel like I was going backwards.

I have recently come to the conclusion that this is impossible. One journey is coming to a close and another is just starting. Trust takes time to build up, it didn't happen overnight with T1 and it won't with T2. I am trying now to respect each journey for what it is, in its own right.