From the article: "While use of additional boosters can be part of contingency plans, repeated vaccinations within short intervals would not represent a sustainable long-term strategy," Cavaleri said at a media briefing. He also said boosters "can be done once, or maybe twice, but it’s not something that we can think should be repeated constantly."
I plan to get a second J&J, but after that, I don't know. I'm more likely to avoid crowds, wear my mask, wash my hands frequently, that kind of thing.