N400 field office assignment

I am waiting for spousal N400 with pending I-751, applied in dec 2024. Myprogres tab shows 3 weeks until decision but don’t have an interview scheduled or any other update. Found out my case hasn’t been assigned to an FO after chatting with Emma. How long does it take for that? I desperately want to get interview scheduled so that I can live my life and make travel plans.

Thank you.