When you work on it again, get some current pictures, that would be helpful in making any recommendations. The product you have may be fine, I just don't know. I did a bit of research and it appears that the iodine wound sprays I find are just a lower % of iodine, povidone iodine is usually around 9 - 12 % and the wound sprays I looked at were all in the 1% range. So it likely won't do any harm, it may work at that strength, I just don't know since I have no experience with it. But work with what you have, and fingers crossed.