Welcome to your future! I am remembering the wonderful days of yesteryear, when my 16 year old was in elementary school and the 100th day of school just consisted of him having to bring 100 items of something to school in a ziplock bag. So of course I would forget until the night before or morning of and we would stuff some cereal in a bag and call it good. I repeated this cycle with the next two and survived. But now, that is not enough. This year the fun is making a shirt with 100 of something on it-which of course presents a new set of challenges. I was thrilled with myself for getting this done. That satisfaction lasted about 30 seconds until I remembered the decorated Valentine's Day box that I forgot to make that is due on Thursday. So one piece of advice I can give is that you will always feel one step behind and that is OK! It all works itself out.
*My luck is that this shirt will only have 98 Lifesavers on it.