I'm starting a new job after being a SAHM for 7 years and need fashion advice!

So I've been at home for the last 7 years with my kids , so my wardrobe reflects that - leggings, workout clothes, oversize sweaters, casual t shirts and jeans have been my staples.

But I'm starting a new job in the fall as a medical receptionist at a clinic (it's a naturopath clinic that focuses on women's health and it's run by young woman so the vibe is like modern business casual, not stuffy).

I have maybe like 2 things in my entire closet that would be considered appropriate for this job. So I massively need help building a capsule work wardrobe stat! Just looking for tips and tricks and basics I should invest in to make a few different go to outfits and I can build from there.

Just want to look put together and professional. I don't even have a single pair of work shoes, I just have Birkenstocks, Adidas sneakers, dressy sandals.

I'm seriously in need of help!