Actually, if you haven't already been bitten, you're doing pretty good! Be real careful about handling or getting too close when your sav is in 'feed mode.'
I have a rescue 2 foot sav that was said to be the proverbial "dog tame." Poor thing was so dehydrated and starved that it had no choice but to be tame. After some proper temps and good food, one day ol' Bubba felt good enough to turn around and hiss and tail whip at me when I reached in to stroke his back. First time the poor thing had ever felt good enough to object to "stupid human tricks."
I respected his decision to be left alone, and just went in to do basic maintenance. Then one day, Bubba just walked over to me, and I reached out and stroked his back; no hiss or tail whip, so I gently scooped him up. Guess he'd decided it was time to interact. I don't try to interact when he's out 'hunting,' and I always touch him on his back or side before trying to pick him up. (As if you did not know, never smell like dinner, or even a snack, when you reach in! LOL!) I also respect his space if he retreats to a hide. It appears that if your monitor is planning to object, it generally will not let you get close at all, rather than be all nice, and then nail you. Monitors are more honest than people that way.
Good luck, you seem to be doing ok. Just watch him, and you'll learn to read his body language.
Leslie