Welcome to Sober Recovery. You have found a great place with lots of Experience, Strength, and Hope (ES&H) from folks who have been where you are or are where you are.
Well, unfortunately there is nothing you can do for him. He's already told you in his own words 'he's not at his bottom yet' in his mind.
You and your mom,
didn't cause this
can't control this
and
can't cure this.
What you can do, is find some Alanon meetings in your area and try at least 6 different ones before making up your mind. Alanon can help you both very much.
There is also a great book, by Melodie Beattie titled "Co Dependent No More". It is available on Amazon at a very reasonable price.
Please try not to enable him, both you and your mom. Give him no money. Heck your mom can even stop doing his laundry, since he's not working and doesn't seem to want to, he can do his own.
Please keep posting and let us know how you are doing, as we do care very much.
Love and hugs,