Can't find the link right now, but one place the timeline to a final rules was mentioned was in the video of the DAC that was making the rounds earlier in December. FAA rep plainly stated 2+ years to RID final rule AFTER the end of the comments. If it is faster than that I'll eat my shoes.
I wish it were as simple Amazon, but it is more than that. There is considerable pressure from DHS and other security concerns, real or imagined. The FAA wheels grind very slowly. The RID ARC first met in 12/17, it's taken 3 years from there and 2 years from their report to get to the NPRM. It took them 19 months to get the Part 107 rule done and they had virtually no negative comments on that.
And yes, make your voice heard. Submit comments. Work on your Congress reps, etc. But don't panic. We have some time to enjoy before things change too much.