I am so sorry to hear of your loss it's such a sad thing a parent has to go through . Many thoughts and prayers to your family to send you some comfort during your grieving .
There are some support groups for loss of children maybe you can see if you can find one and are you able to get added help for your boys since it's hard to move on to just continue after such a unexpected loss.
Due to your loss share with parents about getting things to childproof those blind cords it may help you by helping other parents realize what danger blind cords can actually be by sharing your story .
You will be helping protect other family kids by passing that around .