My pups are nearly 4 weeks old, have started to wean them, but not sure how much milk they are supposed to be having and how often, I have 8 pups, five are quite big allready. Also should they still continue feeding on mum, and how long till I ad some solids to the milk substitute.

Hi,
I would start weaning them by once a day giving each pup a teaspoonful of scraped raw beef. Let mum take care of all the milk feeds for at least another week before you start introducing milk replacer.
:)