@FluffyYellowDuck,
Your dad's safety and your son's salvation are not your problem to solve. Their problems are a distraction from your own needs in reconnecting with God. I have seen great progress in your understanding of God and tthe relationship that He is drawing your into.
Your best way of helping both your father and your son is to hand their problems over to God to deal with as he is much more qualified that your or I in dealing with their respective issues.
Just like I have asked God to include you in those whom He is drawing to Himself many months ago, and I can see that progression happening, my faith step for me is to thank God that He has heard my prayer for you and that He is now drawing you to Himself.
I can pray on your behalf that your father and your son will be included with those whom He is drawing to Himself and then in Faith, thank God that he has heard my prayer for your father and son to be included among those whom He is drawing to Himself, and remember to rejoice and give thanks periodically that this is exactly what He is doing in drawing them to Himself.
I would recommend that you likewise ask God to draw your father and your son to Himself and then believe and have faith that this is what He is doing in regards to your father and son by rejoicung and having faith that God will acheive this final outcome.
Shalom
PS: - Handing their issues over to God to deal with is the best way for you to deal with their issues at the moment so that you can focus on the issues from the past that are troubling you that have not been resolved, whatever they may be.
Shalom