Sounds like you did the right thing Nobella. I used it *some* with Trixie's first litter when they got to the point of good mobility, starting to wean them IF I wasn't comfortable with the amount they'd eaten for the day. When they went home, they each left with a tube and the new owners had instructions on how to use it and why.
When Trixie got close to delivery--2 days before, she ate very little, so I made sure she had some in her then as whelping took a lot out of her, understandably.
We also keep a close eye on them (pups and adults) anytime they get vaccination in case they are at all lethargic.
Likewise, when Kasey lost all his teeth at once recently....loads of fun there...we used it again.