His drinking is not your problem to solve. That is his problem. You can't get him solve it.

Right now he does not even see it as a problem.

If it were me I would beg my dad to take me and dogs back. I would beg. I would promise to not go back to my husband until he has been sober for, say, two years. I would make certain to keep that promise, no matter how sweet my husband temporarily and manipulatively got. (Every abuser is sweet some of the time. That is a main way that they get their victims to stay.)

Then I would figure things out/save money until I could live on my own.

If you can't do that, think about a shelter. You might be miserable there, but you will be surrounded by people whose entire purpose in their work is to help you end the misery. With your husband, the exact opposite is the case, his goal right now is to continue the misery until death.

How old is your son now, and are there any other children involved?

What is the status of the divorce filing?