Alcoholics are alot alike. The stuff he is telling you is the same as my A is telling me. My A is the father of my 2 kids who are 3 and 4 and then he has another son who is six. His son lives 13 miles from us and he does not make any plans to see him and hasn't for a year. The mother of his son doesn't let him come over anymore because I reported something to CPS, so my kids dad left it at that and doesn't care to see him. How sad is that! So as much as you hope they will WANT to be involved, that is their choice and he is missing out.
I agree with the others file for CS. Hang in there!