I agree that you should do that and you've been patient long enough. Since you haven't made a scene yet it's just easier for your husband to deal with it by not doing anything. I dealt with this a little bit in my early marriage and I started blowing up at my husband if he wouldn't stand up to his mom and that fixed the problem really quickly. He didn't want to have to deal with the headache of me losing it afterward so he started handling it right then and there. Now there's no need for me to get upset at all anymore. It's great you just have to be willing to be uncomfortable for a bit. You don't even need to direct anger at your ILs during any of this– just act mad towards him. It should be enough.