Babies 15 months apart

Me

I’m due with baby number 2, 15 months after my first! Who has been in a similar situation? What baby gear do I need to buy again and what do I need to think about? I’m already feeling like I’m going to need to get a convertible car seat for baby 1, reuse infant seat for baby 2, and then get 2 rear facings down the line. So much $$!!! And then the stroller situation 🤷🏻‍♀️Looking for any shortcuts and tips I need to know of.