Yes, and of course it was all reset by the end of the episode anyway.You know as well as I do they made it up on the spot to up the stakes and never thought twice about the wider repercussions.
What annoys me is that, even if you accept the enormously difficult conception and the fleeting window of opportunity, the species could still just about work if you established that triplets (at a minimum, but preferably larger litters) were the norm. That would not really have changed the central plot of Elogium, since no babies end up being born at all and indeed the emotional dilemma would probably be made more pertinent given the additional burden of raising multiple children instead of just one. Instead they had to crush any hope of plausibility by showing single births only.