Refrigerator not cooling during ice making

I've had my lg french door refrigerator for 2 years. It has ran with zero issue in that time. Until yesterday my wife and I manually made ice with trays. Last night I hooked up the ice maker water line so we could use our in door ice maker. Today we noticed that the refrigerator seemed warmer than usual so I checked with a thermometer and it was up to 57 degrees F. We realized that the lights were staying on after we closed the doors and they were extremely hot. I removed the bulbs for the time being. My refrigerator still wouldnt get cold so I opened the door and had my wife hold down the switches on both sides. The fan that blows cold air into the ice maker was blowing a nice steady stream of cold air but the vents in rear of the refrigerator was blowing a very very small amount of cold air. I turned the ice maker off and applied the same test at which point the fridge vents were blowing a nice steady stream of cold air. Closed the doors and the fridge was cold again in 20 minutes. Do I have an issue with my fans not operating properly? Or is it normal for the fridge fan to blow less air into the fridge when the ice maker is running and blowing cold air into the ice maker?