I assume you mean http://amtrakdelays.onlineschedulingsoftware.com/ when you say Amtrak Delays site. Yes, it appears defunct.

Look at Amtrak Status Maps Archive Database (ASMAD).

Of course, you are not interested in how all the other trains perform, only the one that you are on. The recommendation that you take an earlier train and spend some time in South Station is spot on.