Prayers for strength, and for help in your situation. dont give up on researching organizations, such as domestic violence , or board of mental health, i wish i could offer more .
my dad threatened to take a bottle of pills once, while very drunk, and it is with me to this day how petrified I was. my mother reassured me, bless her, by telling me there was only a few pills in the bottle. i was 11. i still have ptsd from living with alcoholism, and the violence that sometimes occurs. counselling would have been helpful, i am sure. glad your young son is talking about it with counsellors.
best wishes, be safe.
chicory