I just made this same recipe: Kenji Lopez Although lime icebox cake though he calls it cracker pie.
Reading the reviews I did the same as you recommended, Shellybean.
I made a half recipe but used the full amount of lime juice and zest.
Other changes: replaced half the cream with yogurt. That helped further temper the cloying nature.
I used gingersnaps instead of Ritz crackers because that’s what I was trying to use up.
Came out quite well. Makes a change. Simple and easy and no bake without gelatin.