My memory or impression is that the NTIA frequency allocations made in 2019 was the result of a directive, not a suggestion. Now it is 6 plus years later and many agencies have not complied. From what I understand those agencies have not been funded to enable them to comply, but will comply when funded to do so. NTIA is not issuing any new directives to force an agency to comply by a certain date. Some agencies are closer to complying than others. The U.S. Forest Service, at least in the west, seems to be in compliance, the BLM seems to have made substantial progress, while the NPS and USFWS haven't made nearly as much progress.
You probably have more exposure to this situation than I do, so the above may not be correct.