Re: Is this any sort of progress?
if he is going to AA meeting because you pressured or asked him to, it wont take. he has to go because HE wants to go.
Also, not sure how or why getting his parents involved in all of this is helpful. Are they part of the problem here perhaps? Maybe there are issues you are unaware between him and them?
I dont know if this guy is ready to get real yet. I wish i knew what to tell you, just be aware that addicts go thru many stages of "I really want to change" before they actually do. and they will often take you for a long exhausting and mind numbing ride before they actually do change for real. your energy will be depleted and exhausted dealing with this situation for years to come.
My recommendation is to take a break from him. If he gets his shit together, great, take it frm there. But if not, stay away. How many times have i seen this situation? a million it seems. never ends well.
take a break is my advice, get away, get a new perspective, you are too involved to even see clearly what the deal is.
best of luck to you, and good wishes.