At how many weeks did you have your second baby?

I’m gonna be honest, I don’t have anything ready for baby.. I am currently 30 weeks with my second & have decided to wait & buy everything all at once. We won’t be having a nursery because we do have plans to move next year. My family tells me I should start getting everything NOW because usually when it’s your second they come early. Any advice??? I was planning on getting everything by 34 weeks