2D Tilemap colliders on collectibles

I'm using Tilemaps to create a Pac Man type game, and am using a tilemap to place the "dots". I need to capture the OnEnter event of a dot to "eat" it so I added a Tilemap collider.

Thru testing, I've found it does register the hit, but won't register another hit while it's still in the collider of a previous dot. So only if I REALLY space out my dots does a Tilemap work for this.

In the below pics, the first would register 4 hits. In the second, only 2: 1 when it hits the first dot, then not again until the last, spaced out one.





Any help would be appreciated, thanks!