I think it's the author's recent health issues that are causing problems, it's clear that he had to blitz through making these with the time available. This is self published to my knowledge so I don't think that's an issue, and he had been gearing up for this many years before it started releasing so I seriously doubt he's making any drastic changes to his plans for the story. A hiatus is far more likely than a cancellation.
Thanks for letting me know I admit I was a little harsh in my comments if the author has to put their health first that is what matters most. We have lost far too many talented mangakas/artists and authors due to them pushing themselves too much. While I wish this was handled better I would hate for this to never finish at all. I am going to miss this series once it ends been one of my favorite genderswap and idol series I have seen in years.
Gonwon has always been one of the worst elements of the story for me as he has managed to slip into every arc and be at places he had no reason for being in. I know from a friend who had a junior position at a South korean idol agency that Gonwon's behaviour would have gotten him fired as a brand risk so I find it jarring to see him get away with so much unprofessional behaviour in a mostly realistic and grounded story like this. All my thoughts and frustrations with Gonwon as a character is a build up throughout the story not just the last 2 chapters. At least the other character I don't like as Kontoru calls them 'B**** A' shows the ugly side of the idol industry that does exist while Gonwon just makes mistake after mistake and doesn't get reprimanded at all and no character growth either.
Hopefully it will now push Gonwon to the side to focus on how the medicine will impact Kim as Han psychologically and building female friendships now they are remaining as Han Yoil. As well as tackling the childhood friend, brother, grandma and Lee Ruha missing Kim now he has disappeared for now.
I wish the best for the author's health and hope they have a full recovery.