Hi lostandconfused,
Sorry you are feeling so bad about your relationship at the moment. I know how hard it is not to feel appreciated, or be given a sense of being a priority.
When I hear this my first instinct is to think of validating his feelings about his mom. You can study on on this issue here:
ValidationI think it can only lead to pain for you if you any way compare yourself with his mom, especially as it sounds as if he has a big wound there and is reaching out to her to get some of his needs filled. This is his pursuit and pain to deal with. I'd do my best to depersonalize, have compassion, and take some space from it.
Is it possible to just focus on doing what you can do to find time for each other and enjoying what you do have? What parts of this relationship would you change if you could? What would be a more ideal version of the relationship and do you have any way of getting towards that?
wishing you peace, pearl.