My in laws don't understand we need our space: Advice?

My in-laws are asking us to come over for dinner every weekend. It gets to be so much. My husband and I already work opposite schedules since he has retail hours and I have a standard 9-5 job. We already have a shortage of time together since he has to do some nights and weekends. My MIL wants us to let our son have a sleepover at least once a month. She has no visitation rights, and it’s not like I’m in a position where I want time away from my child. I enjoy spending time with the 3 of us, and that is what is getting me through my dad’s health issues and this pandemic. We can’t see my family because my dad has critical health issues and can’t get covid or any other illness since it would be detrimental. They don’t seem to understand that we need space, and they are always calling and inviting us over. It gets stressful because you don’t want to disappoint them, but it’s so much. Help.

I’ll b honest. I was working n going to school. I knew my father in law wanted to c me n the kids n husband more but I would not have for my responsibilities. He died. I regret so much having a schedule so full that didn’t allow me to have the balance that I needed to spend with people that I love. I thoug once I’m done with my degree I’ll have time. Now I I’m just xtra careful with my mkney, stop working n take less classes. Now that I even spend more time with husband our marriage has improved by 80% n we don’t even mention divorce. Our kids r happier. I have more time to help n spend with my disable mother. I actually have time for friends n my life is so full!!! Im going to pray for God to guide you. Can you imagine being your mother in law? I said you should have a companion for her n visit her one every 2 weeks. R

My husband had bought a house before we got together right beside of grandmas house and right by his parents house too. They would drop by every night, unannounced. I couldn’t play with my kids in my own back yard without one of them coming over. We sold that house and moved across town last summer to fix it. Your MIL wanting to see her son and grandkids once a week isn’t asking a lot. They’re her family too. You’re being unreasonable. We do family dinner with my family on Sundays and his family on Wednesdays. Maybe offer something like that as a compromise.