I have a project page from the previous jam and would want to continue working on it if possible.

 https://zeinging.itch.io/reclaim-the-landfill

Would an update to project page be within the rules of the jam or would I need to make a new project page during May 2024?

Anti capitalism resources:

Hi zeinging!
This rule was mainly added to easily remove (without a doubt) all the spam that arrives during the jam. We have no problem making an exception if, as in your case, it is requested in advance and the reason is justified. So yes, no problem if you simply make an update.
If (by mistake) we remove your submission during the jam, please let us know.
Thanks.