No likely letter from NESCAC schools. Most likely, you will receive an email from the coach saying words to the effect that the pre-read “looks good,” but there is no guarantee of admission. That is a positive pre-read. Usually this is a very positive sign. If you get such an email from the coach, you usually will be expected to apply early. Respond to the coach with an email that you will apply ED provided the coach agrees to support the application. Getting an email confirming in writing that the coach will support your application is as good as you are going to get. Beyond that, nothing will change the two-three months of jitters you will experience.
Slow is fine. Some schools work faster than others. Others are trying to figure out who will commit. Who cares when you find out, as long as the arrangement is positive for your kid. Stay chill.