Baby registry

So I’m only 9 weeks but would it be crazy to go ahead and start one to kind of stay organized on what I need? I been thinking of everything I need and I keep having to look everything up and I just want a good list. And not make it public until like 20 weeks. Everyone is telling me to wait but I honestly just want it so I can get organized on what I need and want. I’ll find gender out in a couple weeks! I’m doing the blood test.