you are correct, not a SOTU. President does not give a SOTU address after 1 month in office.
Neither does it have to be a single address per year. A president could make two or more per year, with each devoted to a single area of concern. A SOTU for the economy, one for defense etc.
And there is no reason why Trump couldn't go over the heads of the media and post his SOTU remarks on the White House website.
Why not?
There exists a SOTU and it's bad....completely AFU.
(but about to turn around)