I can only remember "High Clear" although the story touches this aspect after a while, the uke loses spark in competitive sports but seeing seme putting so much effort in their field makes them gain the spark again too. The story is from seme's pov so this part is later in the story. Overall it's a good story, fluff and lovely.
I love it when they have a muse~
https://www.mangago.me/read-manga/runway_hit/
https://www.mangago.me/read-manga/naked_color/
This is more of MC trying to break out in the fashion industry (his last chance) and ML become his muse, love them. Title: Runway Hit
Famous potter in heartbreak hiatus gets back to it thanks to ML
https://www.mangago.me/read-manga/unintentional_love_story/
Where MC loses their passion in something they love and the love interest helps them bring their spark back to the thing they loved doing. Or even something similar to this..Thanks :))