Are you having any temperature related symptoms, i.e., soft ice cream that appears to have melted slightly and refrozen, soft breads in the freezer, warm or hot outer surfaces anywhere? If cooling is not a problem whatsoever, are any of your ice cubes smaller than normal, or do you have hollow ice cubes
; you would be able to crush the cubes in your hand? If either of these pertains to you, you have not enough water coming to the ice maker, due to a faulty water valve not opening completely, or your water source pressure is low. disconnect your water line from the fridge, test pressure of the water line by placing end in a bucket, turning water on. It will be obvious how the pressure is. if pressure is good to really good, you have a bad water valve on the fridge. If pressure is so-so to bad, change source water valve.
If cubes are not small nor hollow, but rather normal full size cubes, just not enough, you probably have an intermittent problem with your icemaker, replace that.