Mom and husband

Looking for opinions… my very soon to be husband has his own home, lives alone with his dog.. he’s been living alone for threeish years now, but still continually his mom comes over (a lot of time unannounced and when I’m over) she does his laundry, she does his grocery shopping for him, cleans his house, she’ll bring him food from anywhere he wants whenever he wants it. I’m really concerned for not only his maturity and readiness for marriage but her interfering after we’re wed.

Advice?