Baby shower outfit/questions

My baby shower is in a week and I’m so stoked. I ordered my dress online from this site called boohoo. I was skeptic at first because I didn’t want to get the wrong size or it be not what I ordered but it actually came perfect! A little darker in color but I actually love the color more. I finally went a bought a cardigan to go with it and I couldn’t have matched it more perfectly. Especially when I didn’t have the dress on me while I was shopping for the cardigan. I have some foods I have to prepare and some food that don’t need to be cooked like chips. When should I go to purchase the ingredients and other foods? Like the day before or two days before? I’m also extremely nervous about getting too many newborn clothes. I already have a lot from what my mom has bought or what I’ve got, and even though I’ve tried to tell people to get bigger sizes, I’m nervous they won’t and I won’t have enough for if he’s a bigger baby. (Which I really hope he’s at most 7lbs lol) how excited were you guys for your baby shower? And did you end up with more newborn clothes than you wanted/needed?