don't worry, you're not making a mistake, and thank you for your contributions :)
a note to keep track of works is perfectly fine.
However, i had not understood the purpose of the note from your text, maybe next time add a some indication that this is intended to keep track of something and not an edit request.

what is the exact location that the barriers are at? that is not entirely clear to me at this time.

As for the date, it is likely (from my understanding) that the route will re-open partially by April, while works continue to complete it by 2028. In that case, the route should be updated to include the bike=yes tag to indicate that the route is usable to bikes despite it being under construction.

If you can find a source for the construction completing in 2028, or are relatively sure of it yourself, I can update it to reflect the construction end time and opening time being different

please do keep this note open, as it allows us to track the changes to this easier