So will you file comments to the FAA? Which ones? FAA published the NPRM early before it's formally available on regulations.gov:
The FAA is posting the NPRM on its website today to enable the public to begin review early.
And it's basically this invitation:
Comments Invited
The FAA invites you to participate in this rulemaking by submitting written comments, data, or views about this proposal. The most helpful comments reference a specific portion of the proposal, explain the reason for any recommended change, and include supporting data. To ensure the docket does not contain duplicate comments, commenters should submit only one copy of the comments. Send your comments to an address listed under the ADDRESSES section. Include “Docket No. FAA-2020-0686; Product Identifier 2019-NM-035-AD” at the beginning of your comments.