RTX Prescription Drug Plan Changes

Just got a letter from CVS health saying that effective January 1st my prescription drugs are subject to a 20% copay. During open enrollment I selected the lower tier option because I typically never hit my deductible or out-of-pocket max. Does anyone know if it's possible to adjust the healthcare plan selection after open enrollment has ended given that this new guidance was just published today?

Also, this is such a kick in the groin. This move is is going to have me hit my out-of-pocket maximum every year just to cover drugs that just keep me alive. This is effectively a pay cut on top of everything else. I'm so disappointed :-(

Edit: BU is the glorious eagle