Well your at school/ on the way home for around 8 hours of the day + 8 hours of sleeping that leaves you 8 hours to actually watch them. I leave my fry to fend for themselves a couple have survived each spawn from the onslaught of one male betta, 2 endler males and 3 guppy females prowling for them. I did bild my own filter which virtually covers the entirety of the rear of the tank as a moss wall so they hide behind that when frightened. Best thing to do if you want them all to survive would be to put the preggo in her own separate if at all possible.