I let my 7005 gravel bike frame age for 6 weeks before building it up and riding it. I've been riding it for over a year with no problems. I wouldn't worry as much about a brake tab.
I have a document that shows the strength regained over time, but I can't find it right now. If I remember correctly, a significant amount of strength was regained after about 15 days and gradually increased to about 90% at 45 days.