Reply to Severe tooth decay in baby

I'm in a similar situation, my son is 3 and needs 4 crowns on his back molars with a possibility of a baby root canal and possibly a few fillings on the teeth in front of those. The specialist we took him to scheduled him for March... (yes that far off ) to have them done all at once in the hospital where they will do his x-rays right before the procedure. I feel like it's all my fault too, even though I've been struggling since his birth with ppd, and PTSD among other things I tried to do everything because my husband is the same way, too hard or interferes with what he wants to do and he's not doing it. I begged for help and was told that if I want it done then to do it myself. Even my now 8yr olds brushing suffered because he wasn't making her brush while I was in the hospital or for months after I got home and was on restrictions... Both our genetics are bad so they already have two strikes against them but I guess I'm the only one that cares. Sorry for rambling...