Whirlpool Side by Side residential fridge Problem

Freon check would be the last I would do. Check under make sure coil is lint and dirt free as much a possible make sure condenser fan motor is working properly. One way to check that is if the frame around the doors is excessively hot.

If your IM is failing your heater on the IM to release cubes could be staying on longer than need be. Have you replaced your filter regularly. Could be a defrost problem but if the fresh food side is good and could not a defrost problem. The IM is generally the problem.