How do I get quarterly data?

I have a related question. When we pool 3 months of the basic monthly samples to get quarterly (or annual) one, shouldn’t we consider repeated household and thus make adjustments for duplicated observations? How can we address the issue of duplicated observation in this case? Should we limit the sample to a certain MISH (e.g., MISH=1)?

I think a similar issue was discussed previously but wanted to make sure I am understanding correctly. I am attaching link to the previous discussions. https://forum.ipums.org/t/can-i-pool-monthly-cps-data-into-years-to-look-at-share-of-population-by-educational-attainment-level/875

Thank you for your support!