Time to keep rolling with this spell into DnD 5e

Disrupt Blance

transmutation cantrip

Casting Time: 1 action
Range: 60 feet
Components: V, S
Duration: 1 round

You alter the subtle balances the keep the creature moving causing chaos in essence of the target. Choose a creature in range to makes a Constitution saving throw. On a failure the creature takes 1d6 acid damage. At the start of the creatures next turn, it must succeed at another Constitution saving throw or take the same damage again.

This spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).

Thoughts? Does the second saving throw prevent the damage from being too high for a cantrip?