The plan has been to develop a draft, accept comments and amendments during 2023, and sign it into law in 2024. For the record, The OP posted our grave concerns about this back in 2021.

An Intergovernmental Governing Body (IGB) has been drafting this document, and they will be accepting feedback from "relevant stakeholders" regarding the final draft, as well as the addition of amendments.  There are about 220 relevant stakeholders participating in this.  Not surprisingly, they include civil society, academic, and health groups; the pharmaceutical industry is also well-represented, along with agribusiness groups. Some of these negotiations have been open to the media. Many have not.

President Biden has supported this effort from the beginning, and American groups represent some of the relevant stakeholders.