Exam stress is fuelled by two things you can influence: comparison and chaos.
Comparison: mute the group chats that spike your anxiety. Someone else's revision timetable is not information about you.
Chaos: plan tomorrow the night before — three blocks, one subject each, breaks included. Small structure beats heroic all-nighters, and sleep is the highest-yield study aid there is.
If dread feels constant or you're freezing up, talking to a counsellor is a practical step, not a dramatic one.