Doing this one again.
By focusing on the major categories, this gives you a lot of room to explore whatever romance book tropes you want within those categories. Like enemies to lovers? You could read this trope every month of the year for each challenge or mix it up along the way.
January – Contemporary Romance
February – Erotic Romance
March – Romantic Comedy
April – Historical Romance
May – Fantasy Romance
June – Queer Romance
July – Sports Romance
August – Dark Romance
September – New Adult Romance
October – Paranormal Romance
November – Romantic Suspense
December – Holiday Romance