I would say prior to, during and even a few days after it heals no oral sex.
As long as you don't have symptoms you should be okay. Now I am saying this ONLY from my own experience...I have had type 1 oral for as long as I can remember. I was with my first hubby for 15 years and have never given it to him anywhere and trust me we did have oral sex. I am not a big fan of people saying they got h when their partner had no symptoms( I am not saying it isn't possibe) BUT I think the symptom was there but only slightly and went unnoticed. I knew when the tingling started to refrain, and from kissing also. To keep my partner safe I would also wait until a few days after I was completely healed. Now my new husband has type 2, we do the same. Even if he feels "out of wack" we don't do anything. According to blood tests, I don't have type 2 and he does not have type 1 so apparently so far we are doing something right! Good luck & I hope this helps!