Hi , after some advice please , I have 2 wk old puppies who have always had runny/soft poo gaining and feeding well . I'm wondering if I can give them something to firm them up a little ? Also shall I go ahead and worm with their poo being like this ? Yellow runny and smelly .

Chances are the loose stools are caused by something that mum is eating passing through in her milk, if you are sure there is no way they can have picked up any infection then go ahead and worm them as the worms won't be passed without and will cause problems of their own, don't forget to worm mum and any other dogs the pups are going to meet in the household.