I recently bought 2 heavily pregnant mice from a pet store (who were supposed to be feeders) and gave birth to a total of 22 pups (9 female and 13 boys) but 2 of the females are super small and scruffy, now aged 2 weeks old today. They tend to sit around and sleep a lot but also have some lovely bursts of energy and perk up when handled. I have read a lot of controversy on keeping such small ones alive or not, and if they have a chance at living without a painful or uncomfortable life due to their size/possible health issues, I would love to give them a boost to help them. Would it be a good idea to give them a supplement of kitten milk replacer (on top of mothers milk), and if so, how often and how much? I am not a breeder and intend to keep them as pets, so I am not looking for any advice on whether they are worth keeping from a breeding perspective.