Don't take this as expert advise, however, If it were mine I would dab it with some cloning gel and bury it to a little above the cut (un-bent paper clip for support if needed) keep spraying like a clone, and it just might make it. A dome of some sort might help also but be careful not to let it stay too wet, use the cut off bottom of a plastic bottle. Take it off and let it breath through out the day and spray it again and cover it up again.
This isn't bad advice either, I should have thought of the cloning gel. I did mention clones but the thought of using the gel never occured to me.
You sure you're not an expert Gold123?