congrates for your WW female for giving off their new off spring at this new year.

Regarding to your question
1. separate out the male asap but dont disturb the nursing mum.
2. seperate the babies at 3 to 4 weeks of time,when u see they open their eyes, tht the best time to separate them
3 for the new litters, separate them according to their own sex. male in1 cage ,female the others. to prevent intercross breeding among family members, if the 1st 1 inter cross breeding is still ok, wont do any serious dmg, but prevent it is the best way. put the father n mother in different cage too, always dont mix with adults hamster, as this will cause in fighting due to different scent.
hamster differentiate themselves using scent.
for the nursing mum now, provide clean water every 3 alternative days, if you have LC-VIT syrup is better to mix together in the water bottle.
let the mum nurse their litters for 3 weeks without changing their bedding, i know is going to stink so make sure a good ventilation area, and less noisy area for her .
after 3 weeks separate them, let the mum rest for 1 month plus or so on, so that if can recover her body and restore bk to healthy self.
feed the food with high protein, like soak the breed with milk, but provide in small quantity, if finish top up, if got left over throw it. to prevent fungus or mold growing.
eggs can be provide too for her.
hope you have success full new ww soon, oh ya if the female cannibalism her youngs1, dont feel so sad about it, sometimes is due to her 1st time pregnancy and cut down the litters amount, or she sense the litters is not healthy to survive future. cheers mate.

Oh i see.
The father hamster seems to understand the mother and didn't disturb her much.
By the way, they are 9 days old today.