I follow both your channels. Your work is commendable but viewership is very low. The idea of inner circle is good but i don't think it is sustainable, it has already been copied by a youtube teacher 'Mxxxxxsview' with a bigger subscription base much after your video launch. He has adapted the concept around paid subscription which i think is sustainable. In today's world free things are not valued, it's the bitter reality, which is why you have low number of subscribers. I have been there doing free teaching on youtube, it doesn't work, i know that you will soon lose interest and stop the good work, so I am suggesting you to rethink. Consider some paid subscription where students value the lessons and you earn something for the work so that you remain motivated to continue the good work. Even if 10 students are there you will have a reason to continue. Don't mind me being so direct my intention is not to discourage you, only show you the reality. Consider me a well-wisher.