I am a member of the Association of Yoga Studies and recently this special community of teachers and students were gifted with a new website. You may not be an offical member of AYS but as you are working with the teachings of Desikachar, you are certainly a part of that community. I encourage you go go online and have a look.
I’ve been asked a few times recently, ‘what type of yoga are we doing?’. Here’s a link to the page that discusses the term ‘viniyoga’: http://www.ays.org.uk/about-the-ays/
I hope you enjoy the site, would be great to get some feedback