P.M.
E., I looked up your profile because I was wondering about the age of your son (about a year?) and the length of your marriage (?) so I'd have a better understanding of your situation. I read your post of a few months ago in which you were lamenting the lopsided situation in your marriage, and how exhausted and discouraged you felt. It looks like things haven't improved.
I have three suggestions.
1. If you can see the option of leaving this man or separating from him, tell him that clearly. He may only be hearing from you now that you love and are trying to understand him. A shock to the system may help him wake up enough to realize that he could be contributing more to the marriage, and that because he isn't, his free ride is at risk. That might be enough stimulus to initiate some change.
And it may not work, in which case be prepared to leave, or ask him to leave, since you are apparently paying for your current housing. I left a similar marriage after struggling to make it work for 13 years. By then, I had an 8-year-old daughter to support. It was hard. It was also one of the healthiest decisions I ever made.
2. Investigate Non-Violent Communication – a practical and positive tool for increasing the respect and understanding in any relationship. You can google this for descriptions, examples, books, videos, and classes. Though only one person using it can shift a difficult relationship, my husband and I have both learned this effective process, and found it transformational in our understanding of ourselves, as well.
3. Look into co-dependency, because your husband is dependent on you to enable his lifestyle of few responsibilities. There are good books on the topic, there are many links online to the topic, and there is Al-Anon, which started out as a support for codependents of alcoholics, but attracts enablers of all stripes, because the principals are universal and they work.
My best to you. Be good to yourself and your son. And be good to your husband; that can and probably should include expecting him to grow up.