My mother committed suicide when I was 15 after many attempts (bipolar). It is imperative to get your son some supportive therapy. I did not receive any kind of counseling or even was "invited" to the funeral. Yes, my family was very dysfunctional. I'm sure you will be be providing the best support & care for your son. What a shock. I'm so sorry & for it to happen on a holiday will always have the "anniversary reaction" be extra strong.