
We weaned 'naturally'. In other words by the end of week 3 going into week 4 we introduced the puppies to warm goats milk, holding each up off the floor, in my lap (excuse pun) teaching them how to lap the milk. It was a messy job but it worked. Once they could do that I moved onto mixing either the goats milk, or warm water with a good quality puppy food, to produce a porridge, gradually cutting back the amount of liquid.
All the time, they were still taking most of their nourishment from mum although over time, the more they had from me, the less they had from mum which meant she produced less milk, drying up gradually. For us, this worked better than taking the puppies right off mum when weaning started. They were fed and then put back to mum to be topped up.
If your bitch is reacting like that (ballooning teats?) and because of the meds she's on, you could always milk her yourself, but again the act of nursing or milking would cause her to maintain lactation which obviously you do not want. I'm wondering if you should cut back on the protein she's having now?
Although I'd always get back to the treating vet, do you have a mentor (perhaps the stud dog's owner or the breeder of your bitch) you can take advice from - somebody who could come in and SEE what's going on there. Not all vets have a first-hand knowledge of caring for a nursing bitch - just the ability to sort out a problem if things have gone wrong.
It does sound as if she's gone to eclampsia AND Mastitis which is quite a packet to have to deal with!!