The “rules” have changed. The “law” hasn’t. At the moment you only need to do TM30 if you leave and reenter the country. For all other travel if you are returning to the address from your previous TM30, no need to do anything.
However, you do need to check with your local immigration office on their requirements, or perhaps in your case Thailand Elite.
I believe so but I actually used mine in May. That was a copy of an old post I made...you should check.with your local office what they require. It should be very similar to my list, but MAY not be exactly the same.