he better start testing for at least estradiol. this isn't just "kind of important", it's "vital" to the success of your TRT protocol.
if he won't test for E2 you can always use an online lab like:
http://www.privatemdlabs.com/
so your Total T was only 553 (225-972) on the protocol you listed? if your TT is that low on that much stuff your body might be using it up really fast. if so, you might want to try splitting your dose into two shots per week.
you're getting your stuff from a US pharmacy right?