I'm in the same boat you are in. I graduated from AFF almost year ago and haven't jumped since due to career change. When I start jumping again, I am def going up with an instructor to make sure I am safe. For the time being, I visit the DZ every other week and watch how jumpers fly the pattern. I also re-read SIM over and over, especially the malfunctions. I practice my arch, alt checks, and pull technique in my pool. I know it sounds stupid, but it works for me!