You could build a button box. Not that hard really. I use Mobiflight because it was so easy to program. I have a 3in1 printer but you don’t even need a 3D printer. Realistically it would cost less than $100 to build a box to control those 2 radios. Personally I wanted to control the whole 172 cockpit so my solution is a little over the top (maybe). Virtual Reality General Aviation Button Box - Self-Service / Home Cockpit Builders - Microsoft Flight Simulator Forums