TALK to him... but not in a way that is making 'him' the problem.
Men, will get defensive or feel inadequate.
Maybe he even feels the same way as you, but does not know how to express that.
But I would not tell him, your marriage/relationship is "insecure" or "weak"... because then it might get him defensive and/or make him think you are blaming him or that YOU are not 'happy' with him. Men, are sensitive to that. So, just put a positive spin on it.... instead of talking about it in negative terms. After all, you don't want him to think you think your marriage is BAD... just that you would like more time together etc.
My Husband, told me the SAME thing.
So well, I have to make a point to spend time with him. Which as a Mom and Wife who does everything in the family... is hard sometimes. BUT... it is important to fuel the other spouse and compromise.... making adjustments so the other does not feel marginal etc.
Just TALK to your Husband about it. No sense just keeping it to yourself, right? A Spouse is supposed to be the one person we can talk with, right? Good or bad.
Just make time... for each other. Have date nights. Talk story. Have meals together. Don't be 2 ships passing in the night. See what his interests/hobbies are.... it is never static... as a person goes through life, their interests changes. Its normal. See what he likes to do, and you too... and maybe do it together.
For example: maybe go hiking together. My Husband likes to do that. With ME. Or he likes to play games.... backgammon, etc. With ME.
Leave the kids home sometimes, and just do things together. Even if grocery shopping.
all the best,
Susan