I am new to this forum,
I have a 9 yr old beautiful kelpie girl who has had EPI all her life.
When we got her at 6 months she seemed fine, but after her first month with us she began to vomit regularly and her faeces were terrible, and she lost an incredible amount of weight, after many tests we learned that she had EPI.
One particular vet told us to enjoy her because we won't have her for long, well that was 8 and a half yrs ago. Her diet is boring ( she scoffs it down though) a cup of Advance Light dog bickies in the morning and at night the same with minced chicken and brown rice.
She was first on Viokase tablets (one per meal), we couldnt get them as of 2 yrs ago, so now she has Creon, and she is fine.
We did try "Lucy" on Thrive D for a few months but it didn't work for her.
It was sad when we learnt of her condition, but to think she has come this far is a credit to us, and her ( for putting up with boring food),
I hope your puppy dog continues to improve.