Would this work? https://www.target.com/p/youcopia-upspace-adjustable-shelf/-/A-81913684
https://www.amazon.com/YouCopia-50202-UpSpace-size-Organizer/dp/B0979N4DJR/ref=mp_s_a_1_4?dchild=1&keywords=youcopia%2Bshelf&qid=1628468082&sr=8-4&th=1&psc=1