Though I have never done a SOG, it's usually characterized by a short veg time, and lots of plants per square foot with just one main cola on top. Your plants are pretty damn big for a SOG, you have side shoots... and it looks pretty congested in there... keep a close eye for mold\mildew and maybe try to remove a bit of the growth on the bottom though if you are deep into flowering that might be more harm than it is help. Best of luck and remember you never "do anything wrong" if your results are on point with what you were looking for