
I found that the pups can be noisy initially usually because Mum is trying to clean them and knocks them of the nipple, eventually they learn to hang on more firmly and I hold the Mum head till they are properly attached, by later the first day they were managing fine.
All the pups need the colostrum to help fight infection but I can see that having more pups than teats means there has to be some sort of rota system.
Her milk will come in if the pups are allowed to nurse, check their weight twice daily as there are so many and only supplement those not gaining.
Do you have vet/nutro drops, this gives the pups calories/energy without filling them up, great if they appear sluggish.