Are you taking Synthroid or other levothyroxine product too?
Are you seeing a medical doctor or some type of naturopath/alternative doctor?
One hundred-fifty mcgs a day is a LOT of Cytomel. A truly HUGE amount.
If you've just begun treatment, it would be dangerous folly to try taking that much this soon, IMO. Other than that, I can't comment much on the method except to say that T3-only thyroid treatment is unconventional.