How many items “should” be on your baby registry?

First time mom here. I created a registry, and curious, what’s the range of amount of items that should be on there? Does such a thing exist? I’m pretty bummed bc my mom made the comment to me, “You should be grateful you had a wedding and a shower last summer.” I was a bit shocked - I feel like this pandemic has sucked the excitement out of this pregnancy, and we are first time soon to be parents and just bought our first home. We could use the help, but unsure if any type of shower will be given. She has zero idea we suffered a miscarriage as well last year shortly after the wedding/honeymoon, so we have been overly cautious of not putting together the nursery early, but now that I’m 26 weeks we are feeling better. TIA and I hope you’re all safe and healthy.