You are indeed spamming projects. I do not get the reason to have 4+ projects for every item.
If this is about mails sent because of the notification settings, you cant deactivate those, the subscribers have to do that in their settings. Unless you find a way to publish things without getting on the feed. If there is a timeframe till the mails get sent, deleting the activity might work.
But seriously, what you ask is pointless. People subscribe and have active mail setting precisly to get info about new stuff from people they follow. And if they follow you, but notice that you release the same thing over and over , they might reconsider following you.
People like you are the reason other people want to filter out AI stuff or certain publishes from browse. There are several threads about that. You basically release a project every day. Not only are you spamming your followers with notifications, you are spamming the new section in browse.