Baby shower planning ?

I’m currently 17 weeks pregnant with my first baby. We haven’t found out the gender yet until our 20 week scan but we starting looking at stuff for the nursery. When should I start planning my baby shower? we wanted to buy gender neutral things regardless off the gender. I’m not showing yet I think I look the same from what I did 4 months ago lol. But I realize there’s a bunch of things to do to prepare for our new arrival and we don’t want to wait too long or too early. Any thoughts