Thanks guys, did a hot soak in the tub with the hottest water that I have, which is about 120F. Then I decided to give it a near boil on the stove. And now I gave it a hot dry in the dryer. It's almost done. Let's see how it is now. I have some room to spare throughout.
Edit: …. and done. Unfortunately, I failed to take before measurements, haha ::) However, I definitely got some shrinkage all around. Main issue for me was the sleeves and cuffs, both of which are a little smaller. Shoulders and torso also came in a bit. Noticeably better fit for me now.