Need suggestions on how to clear the frozen drain line.

I used a turkey baster and hot water.

Hello, i would suggest a cooler and some ice. You can't rush the
defrosting.....it takes time.

What i think, (cant see it...WAG incomming), you are treating the symptom
and not the source of the problem.

My WAG is a problem in the defrost cycle. Call for repair.

Once you have it defrosted, wrap a heavy piece of wire around the defrost
wire and let it hang down into the drain hole. That way the hanging wire
will warm up during the defrost cycle.