I definetely wouldn't worry if Stogie was a little slow to eat. Lots of dogs can be like that, not mine, but there are some. My grandma's dog, who only ate Carl Budding lunch meat, would eat like 1/2 to 1 package a day along with table scraps and it would take him ALL day to eat the 1/2 package he just didn't see the need to eat everything really quickly.
I use stuff like yogurt, eggs, sardines, cottage cheese, ricotta cheese, and just plain water (well I always use water).
Hannah is 55 lbs and she gets fed 2x a day, ofcourse she eats raw
Holly is 35 lbs and gets fed 2x a day as well she gets 1 and 1/2 cups in the morning, mixed with water and then another 1 and 1/2 cups at night mixed with water and usually yogurt is the only thing she can tolerate being mixed in with her kibble. I try not to mix things in with every meal because I don't want Holly getting dependant on that added thing to her kibble.