I don't believe that's how it works. Once it's illegal , it's illegal. It's not like we didn't know this was coming in this case. You'd probably be able to argue in court yada yada but if the package gets seized after the date it's illegal, technically they could still kick your doors down.
The way the NOI (notice of intent) work:s
After the 30-day comment period for the RFI, OASH will provide comments submitted to the RFI public docket to the Attorney General for consideration. Once comments have been considered and at least 30 days have passed since the publication of the NOI, the Attorney General may then issue a temporary scheduling order placing 7-OH above a certain threshold in Schedule I.
It could* happen as early as July 31st as they filed the NOI on July 1st.
I doubt there's too many people arguing on behalf of 7, and the ones who are are likely shit bag companies that sell it, maybe a few doctors who think it should be schedule II.