In the spirit of friendly argument, there's no in-game empirical evidence that delayed ceremorphosis "can mean only one thing".
I believe there are ...
4 of them actualy ... and their names are: Dror Ragzlin, priestess Gut, Minthara and Nere.
I just didnt want to repeat it again, since i allready said it so many times.

But in short ...
I believe that IF your character presumes that
that time is of the essence ...
Then meeting other True Souls should proove one of two things:
A) Your ceremorphosis is stopped.
B) Your ceremorphosis was slowed => they were tadpoled sooner => they should turn before you.
Either way, no you are, well not "fine" ... but also, not "in danger of life" kind of hurry.
Anyway, dont get me wrong here!
I never said that our characters should have mindset of "hah, it does nothing ... i shall deal with it in few centuries ... if i have time" ...
Even tho, in order to express my full opinion, i also believe that such character attitude is perfectly fine and should be possible ... after all, his name is Astarion.

What im saying is that in my perspective, our characters have more than enough reasons to chill out a bit ... instead of rushing so far that they
they die of exhaustion at finish. :-/
But again, such behaviour is also prefectly fine and if you WANT to play character that will freak out and push yourself beyond the limit ... her name is Shadowheart.

The only part i dislike in this topic is that general "no person would ..." yes, they would ...
Erratic behaviour in the wild is rarely a good thing.
I wouldnt use that word ... what is so Erratic about its behaviour?
Maybe its language barier in work here, but isnt Erratic more about someting that do several things in random pattern, rather than about simply taking a few weeks long nap?

Anyway ...
It should eat your brain > it dont.
If that isnt good thing, i cant really imagine what is.

---
You should read an entire post
Why people still get so confused about this even after two years i wonder ...
Once more then: I
DO read whole posts ... my quotes only shows what i react to.
Comprende?
Now ... since you started this way:
because no actual person in real life, finding themselves in this situation would simply "Trust" that they were not going to be transformed body and soul by this thing that annihilates a person's entire existence, just because ours isn't behaving in the traditional way exactly.
If YOU would read entire post ...
You would find out that i reacted on this with quoting a Wiki ... (i will not quote it again)
That clearly states that within "few hours", "we" no longer exists ... so just the fact that "we" are still there to even wory about ceremorphosis is not matter of "trust", its a factual "proof" that this "thing" is not working for some reason.
Also, now when you mentioned it and i read this statement again (bcs i again read whole post, shocking huh?) ... i cant really agree with statement "isn't behaving in the traditional way exactly" ... i mean, feel free to corect me, but as far as i know, our tadpole in fact "isn't behaving at all" ... unless we provoke it.
very early on only Helsin is established as a credible solution.
Is he?
Halsin's people, who desperately need him back, are telling you that you should risk your life for him, bcs finding and saving him is your best option.
Can you really say that you dont smell any sidemotives? O_o
Lae'zel, who desperately need get back to her people, is telling you that you should risk your life for her, bcs her people are your only hope ... but only if she will be present, without her you have no chance to get their help, but with her, its asured.
Can you really say that it isnt sound familiar?
Sazza, who desperately need you to save her ...
You get the idea, no? There is a patern!
I dont really remember a single character that would offer you help with your Brainbug problem without gaining somethign out of it.

which is counter intuitive if one has a potential ticking bomb in their noggins
Can be ... yes.
But in general, no it isnt.

Depends on lots of things like how big is that bomb, if its even armed, how long it would be ticking, if you are even smart enough to realize danger you are in.
Dont throw away other scenarios as "unrealistic" just bcs *you* (and here i mean YOU not your character) would never even concider it ... if this would be universaly true, we wouldnt have
Darwin Awards.

Even if this side content comes together narratively in later chapters, at this point in their story engaging it comes from meta knowledge (I know it is a game, and I know there is no timer, so there is no need to hurry).
I allready presented few in game reasons ...
It certainly can, and in most cases probably will come from meta knowledge ... i agree ... but there are options, if you keep your mind, eyes and ears opened.

Here is an idea - what if we didn’t know we had tadpole implanted in our head (like so many other True Souls)?
Interesting idea ...
But wouldnt that require complete rework (or erase) of whole tutorial part and several starting conversations? O_o
Even if you would erase it whole and you would wake up on the beach, blessingly unaware of your condition ... why would anyone stick with you? ... why would you be looking for a healer? ... why would you risk your life in Goblin camp? etc. etc.