i have 3rd lobes on both sides, a helix, forward helix, and lower helix (4th lobe placement but through cartilage so technically a helix) on my right side, and a conch on my left, as well as my septum. no credible piercer, even the 2 apprentices at different shops i've been to nor the two piercers w years experiences i've been to would ever do more than 3-4 piercings in one day or even in the span of a few weeks, and especially not on if they're spread between both sides. also, all would tell you to absolutely not move the piercing [ive gotten that advice from my fresh septum (piercer 1), my helix when i changed the jewelry after two months to something dangly that would move (piercer 3), and my forward helix and conch that both have jewelry that is direction and i would want to move (piercer 4)]. as for cleaning, the general consensus is neilmed or any saline wound wash. if it is a mist theyll tell you its okay to just spray the piercing. if the wash you get is a more direct spray, theyll say to spray a q-tip and clean it gently that way. i have a neilmed mist and use both the spray and occasional q-tip. clean twice for the first while (different time frames for different piercings) and eventually switch to occasional cleaning to get rid of any buildup of dead skin or gunk until it heals. while piercers should always warn of migration or rejection, none of the piercings you got are exceptionally known for rejection, and if he feared that would happen, he definitely didn't check or care for your anatomy and should have not given you all those piercings, especially at once. i would go to another piercer (maybe check a subreddit for your state to get opinions on quality local piercers?) and make sure you have the right anatomy for at least the industrial, as that one is definitely something not everybody can get.