Naviaux is visiting the NEW Suramin manufacturing plant next week. It's just a waiting game now, likely early-mid 2020 for the Suramin trials to take place. Once things happen they will move quickly, free of the previous barriers, and if all goes well could have FDA approval in 2 years. Per Naviaux, last week.
Ultimately it was not the FDA or the CDC that prevented Naviaux from getting the drug, it was Bayer. They said no after a year of stringing him along. It's a good thing that he is no longer beholden to them. He's awaiting drug form a new manufacturer and it will never be a problem in the future.