Response:

It seems to me that your inner guidance is working well.  Saying “I am That” is a perfectly good sutra to use, and is even used for the final stroke of enlightenment. Whether you are at that stage or not I couldn’t tell you, but you came to this naturally and I’m sure it will only have a positive effect.

You may find that you will want to ease off saying it aloud though and settle into a quiet or even a mental repetition of it. If you go back to your earlier sutras, then definitely do not say them out loud. They are not designed to work that way.

Love,

Deepak