i would use vaseline not KY jelly. We used 100% medical grade protroleum jelly and my son had no issues. There were times where I would have to rub it to get all the specs off but I just did it. I did it gently but theres nothin else you can do but clean it. I mean it hurts but you have to do it. Adam would hollar when I would clean it but after his diaper was back on he forgot all about it.
Ky jelly seems to much like a liquid.
I dont know I imagine that anything caked on would have to be removed immediately to prevent infection.
Unless its a scab. You can tell the difference between a scab and left over debri.
I would call your doc for sure.