The most important thing is to talk to your partner and establish boundaries and expectations for your parents. Boundaries could be something like “We are only free on thursdays. Please call Tuesday if you’d like to have dinner.” Or you can losen boundaries like “we’re both off of work this week. Come over whenever you want”
When I think expectations, I think about my weekly call with my sister and parents once a week. I can expect that will happen. Maybe you could set an expectation like we’ll have a meal at least once every two weeks.