You encounter Nettie who tells you about the Drow, who also didn't change, and had a tadpole exit his body after death. Then you come across the dying dwarf, whose tadpole didn't change him even in lieu of him being wounded to the point of death. If those aren't the first clues that ceremorphosis is not so imminent of a threat as you suspected, then I don't know what is.
Of course you want it out of your head, but the necessity to do it as quickly as possible, starts to be removed from that point forward.
Those are only clues to suggest the process is slowed, and that that's weird. Which is irrelevant. As I already said, only the conclusive statement that the process is *STOPPED*, not slowed, stopped, matters at all. The process having been slowed only serves to say "you're lucky to have not turned yet, but you still need to devote 999% of yourself to being cured this hour so you don't turn next hour." You should have turned earlier, but since it was slowed, you're about to turn right now instead. There is still no basis for toning down the rush until you know for certain there's no deadline at all. Getting it out as quickly as possible is fully a necessity until you know about the Stasis.
Except right from the beginning, you start getting clues that the dire "OMFG IMMA TURN INTO A MINDFLAYER BY TOMORROW" scenario, isn't as pressing as you and your companions thought, and that sentiment only gets stronger, the longer you play. If you want to roleplay ignorance, that's fine, but the game is giving you clue after clue about the fact that your situation is not nearly as dire, from a time perspective, as it seemed on the nautiloid.
Jesus Christ it's like you don't speak English.
What happens throughought is NOT "Oh, huh, there's not really an urgent issue here." It's "Ok, wow, you haven't turned yet? Normally people would have turned by now. But *YOU ARE GOING TO TURN TONIGHT INSTEAD OF LAST NIGHT LIKE MOST PEOPLE*.
Acknowledging that the process of you turning is going slower than usual means ABSOLUTELY NOTHING untill the deadline can be REMOVED, not just delayed. Because the thing about the deadline, is that it was never delayed, you were just past it. The deadling was two days ago, and you need to be frantically trying to fix the problem because there is no telling how quickly you'll turn now that you are past the deadline. Nothing Nettie says changes this. Nothing Halsin says changes this. Seeing that dwarf die doesn't change this. Astarion acting like Mass Effect's Illusive Man isn't even relevant to this. The people you see with their own tadpoles can only verifiably be knows to have had them for a matter of days, while players are out here spending 3 months in camp because they long rest every 2 minutes or after getting a single papercut. Only Omeluum does anything to change this.
You accuse me of "Feigning ignorance" by still considering the situation an emergency. The truth is that your PC is just being a straight and plain moron by not treating the still urgent issue as such. And if you want to roleplay as such that's cool, but it should be the person roleplaying a fool that gets the negative effects, that the one roleplaying someone taking the serious matter seriously.
It's really quite simple. You could have one character, who continutes to take it seriously, because it's serious, recognizing how insignificant "it's going slower" is. The proceed to find a cure in time because they rushed like they should. Then you have another character, who took all these suggestion that it was slower to heart, then died halfway through the process of finding a cure because they were going slow af and did not have an infinite amount of time, just an arbitrarily longer than normal amount of time.
