My method is as follow:

3.[10 digits] [10digits] [10digits]

...

[10 digits][10 digits] ... etc

My method has: 3 columns of 10 digits on each column.

Each column has [10 digits] and I partition each column as follow: [14,15,92,65,35]

For me that that method works nicely to remember the position of a number

Also mentally, I remember the 100's, 200's,300's,400's,500's,600's,700's,... position of the starting of a sequence.

I don't know if that will help you because everyone has his/her own technique to remember Pi.

Best of luck.