Has there been credible guidance to that effect? That might be when maximum protection is established. But with virus circulating widely, you're still at risk even if vaccinated (as well as the great unknown of whether you can be protected from illness but still carry the virus and be contagious). The way I look at it, the purpose of vaccination is to create herd immunity eventually and allow us a return to near-normalcy. It's not a "pass" for people to take risks they wouldn't otherwise.
Also — whether the vaccine is 95% or 55% effective in the real world has yet to be established.
Personally, I'm not going to do anything different for now. I look at it as a backup level of protection in case something slips past my first line of defense.