I want some non binge shows. I have an exam soon

Maybe try a funny variety show like Running Man where every episode is basically stand alone?

Or some really short dramas with a total run time of less than 3 hours like:

• Out of Breath
• Zhang Gong Zhu Zai Shang 
• Adult Trainee (only episodes 3 -5)
• The Happy Loner
• You Drive Me Crazy
• To My Star
• Utsukushii Kare
• Splash Splash LOVE
• A Familiar Stranger
• Soundtrack #1
• Kiss Scene in Yeonnamdong

• Brother's Friend (comedy, only 4 short eps and a bonus movie that ties things up)
• Kitchen for Singles (each episode stands alone)
• Higuma /Higuma Season 2 (silly comedy, very light, the episodes basically stand alone so no bingeing necessary)
• Love Station (very light, super, super short)
• What's Your Blood Type? (comedy, each episode stands alone, very short)
• Me no Doku Sugiru Shokuba no Futari (comedy, kind of BL but not exactly, each episode stands alone)
• The Boy Next Door (comedy, each episode basically stands alone)
• Yin-Yang Town Strange Talk (mystery, each case is about 2 episodes, then a different one)