quick,
First, good news about your cemented gains. Good to see they didn't diminish with a break, as you feared
Second, bad news about the flaccid loss. I know how that is. Flaccid gains are often the best ones to keep (especially if you use a public shower often!).
Third, yes, it appears a cockring would help. I actually try to do a "girth wrap"/ ADS combo, but a cockring would probably be better. Funny enough, I've never used a cockring. I thought about getting one, but then pushed it off. Let me know where you get yours.