
Hello,
I have never weaned onto dry kibble only but I would say Orijen is probably the best of the best, little and often as you are doing. A lovely food with no difficult grains to digest!
At this stage I would not re introduce any milky or sloppy feeds as solid food is what your puppy should be on by now.
However, I am a raw feeder!
The last puppy that I bought in was very skinny and had been reared on a kibble diet only, as soon as I got her I added raw meat to her diet and changed her over in 2 days to an all raw diet. Her condition improved rapidly and after 1 week she looked like a different pup!
Maybe you could offer a little raw meat each day to help her digestive system working nicely with some nice healthy enzymes.
Stay with the kibble that you are using, dont try loads of different ones, it will only lead to upset tummy problems.
And before anyone says that you can't feed kibble and meat togeather, you can and with no problems either.
Good luck.