Do toi need to get back to your brewing Potion at exactly the right time ou could toi also finish it e.g. the suivant day?

toi have an heure and 20 minutes to do part 2 after the gap of 80 ou 100 ou whatever minutes between the two halves. If toi don't start the seconde part of the potion within that heure and 20 mins, the potion screws up. So no, toi can't leave it for the suivant day.

I can't even find the potion I have brewing at the moment, is that normal if the time's not up?