Hi Red, welcome to SR. So sorry for your loss, as you can see though drinking only brings you more grief and problems. I lost my mom 5 months into sobriety and everyone expected me to turn back to alcohol but it did the opposite; I had not been a good daughter (i was a drunken daughter) during mom's life so I chose to honor my mom by maintaining my sobriety after she was gone. I know she is up in heaven smiling at me and she is proud of me.
Take whatever help is offered you, do it to honor your dad, for yourself and for your son.