I'm 4.5 years in. Just few days ago we had a fleeting discussion about this topic. I said that it would take me another 100 years to get to a certain point and I most definitely don't have that much time. The T (ca 70 years old) said that maybe I (meaning me) have 100 years but he definitely doesn't have.

I believe he practices ca 10 more years and I find it likely that I might need that. On the other hand, who knows where I am in 5 years. But I definitely don't expect to finish in a year or two.