Draw 2cc of air into the syringe, inject it into your test vial (after swabbing both vial tops with alcohol of course) and draw up 2cc of test. Then draw one cc of air into the syringe, and do the same into the npp vial. Easy peasy.
I would seriously add more sites though. 4 sites for 3.5 pins per week isn't enough to prevent scar tissue or irritated muscle bellies.
My .02c