Typically, your portal will not change and you will not get any type of notification that you are "complete". Technically, you are not complete as you may update items as you go through your senior year. You application will move through the admissions process waiting on medical and nominations. Later in the year, you may get a letter stating that you are fully qualified (3Q letter) but those are RC dependent.
The best advice is to relax and enjoy your senior year, you only get one of them. This is a marathon process not a sprint. Look at ways that may strengthen your application as the year goes on.