Chastity and orgasm denial discussion

Back in January I got my PA done… the piercer started me with an 8g… a couple of weeks later, maybe around two weeks post-piercing, I went for a stretch. I expected him to move up to a 6g, but he ended up inserting a 4g instead… It hurt incredibly! Even worse than the initial piercing. Oh well, it’s behind me now. I’d like to keep stretching; my goal is to stop at a 0g. Is now a good time for another stretch? Am I moving too quickly? Can I jump from a 4g straight to a 0g, or would it be better to aim for a 2g first? Thanks for the advice. ldsj