I’ve had to do for a boa that injured its mouth striking its cage. It’s definitely easier to do with two people in my opinion. And hopefully the vet thoroughly explained how to properly do it . Like going in between the scales with the injection, and proper location on the snake (so you hit muscle). And yes it can be a little stressful. Hopefully with your husbands help everything will go smoothly. And if done properly, I believe the snake feels minimum discomfort (not as sensitive as us). Good luck.