Oh no

Im a sahm and haven’t been social at all. I planned this big party for my daughter and have over 40 rsvps. GREAT. I was so excited about throwing my daughter her first birthday but now just nervous. I used to be really outgoing before my daughter and super social now I’m VERY socially awkward that even my friend pointed out at my grandmas 80th party. How can I be a good host? How can I not be socially awkward at my daughters birthday party and just be cool like I used to ??? Im not good with people in large groups or people that don’t know each other. And I’m not just overthinking. At my baby shower I had a little over 50 guests it wasn’t awkward at all I took lots of pictures with my guests it was so much fun!! But now I’m not outgoing and social like I used to be …. HELP