Hi there - I too have had very similar surgery - pulling your tongue gently may help stretch the muscles actually - not to the point of extreme pain. But if you're healed it should just loosen up the skin - which is designed to stretch (muscles too) - I'm am supremely blessed... My dr did not tether my tongue - they removed what sounds to be the same amount as you and same location, though no BOT - I have amazing mobility... I'm not bragging... The point I'm trying to make is my surgeon, folded the skin over like a tongue then built a new floor for that runs to my molars (gum area) but it looks and has the mobility of a regular tongue. It was all made from one flap from my wrist. So despite what your plastics guy said... I would get a second opinion from a top plastics guy used to this surgery and ask about a revision - but I would definately wait a bit - a few years - and then tackle it if nothing else works. I do do exercises daily... Sticking tongue out etc... Hugs.