Help me prevent pregnancy feet growth

All my money is in shoe boxes in my closet, and I am now 7 weeks pregnant. Call me vain, but I will try most anything not to change shoe sizes after my pregnancy. I understand I might have water retention and swelling during pregnancy and my beloved Louboutin Eloise’s and Ferragamo pointed toe stilettos might stay under my desk. BUT PLEASE let them come back to me after pregnancy.

Any tips, tricks, thoughts?

I’ve heard to wear sneakers with arch insoles instead of being barefoot at home, for example, to reduce flattening.