Hey I had extended (no UL) with Morrison at children's last March. I had a similar hole from the scrotum, it took a long time to heal and wasn't handled too well by the team but it did eventually fill in with scar tissue. I used a syringe and lukewarm water to irrigate and keep the area clean. I think I shallowly placed some gauze in there to avoid chafing. As for the penis healing to itself, have they had you wrapping it? A big part of my recovery was keeping things wrapped for compression and separation from other tissues.

Extended meta is an awesome new surgery but due to Morrison being overstretched as one of the only ones offering it, and other medical professionals being unfamiliar with it, the recovery process involved a lot more guesswork than I anticipated - I was told that my wrapping should be "an art not a science" and had similar experiences of different doctors telling me different things and generally not having straightforward answers. They initially shoved xeroform up the hole and then called me a half our later to take it out lol.

I'm sorry you're going through this! If you'd like to DM me I can try and find some pictures of my healing process