Labeling a Continuous Reference Grid per cell

[Zelong]

So per the image I have a Continous Reference Grid in my layout.  The user of the map would like to have labels for each Grid Cell, so a label for A1, B1, etc.

I am not seeing how to do that other than manually making the labels which I would rather not do.

Is there an automated way to do this?

Thank you

[RichardHowe]

I would suggest converting the grid to a feature as here

Labelling the newly created feature and making the grid symbology invisible, if you;re happy with the grid as it is in your layout