Baby shower timing?

mimi_8607

So MIL is doing the shower and suggested Aug.11 and I am due Sept.1. Im really worried I will be 37 weeks pregnant and just knowing that make my heart race. I will have 3 weeks to get everything I need that I didnt get at the shower, wash everything, and finish the nursery. I know how i felt in 1st tri and how wore out I was I couldnt even do the shopping stuff without being tired and i'm afraid thats how i'm going to feel around the time i'm having the shower. I like to be organized  early im not a last minute type person. So my question is this to late? Am I gonna have enough time to do it all? Im really nervous.