Is there any particular reason you don't want to fee a raw diet? I don't feed raw all the time, but I do give my girls each 1.5 medallions each morning and then they free feed kibble the rest of the day. They really seem to love the raw!

(Nature's Variety Raw) I add thier vitamins to the raw, that way I know how much each gets, instead of adding it to the kibble that they have access to all day. (I add something for coat and skin)
A little cottage cheese or green beans will also usually make them wolf up their food.
Maybe your baby just isn't a food motivated dog..boy mine sure are!
Two foods mine really seem to like are Natural Balance and Solid Gold Just Wee Bits. If you haven't tried those, maybe ask for a sample and see if he likes those better than some of the others. It must be tastey, because mine really act like it's a special treat!
Does he like treats? If he does, make sure to feed him healthy treats. I like to give mine Zuke's Salmon Treats. They are tiny bite size.
I don't know what to make of the shivering. I've not really had that problem except at bath time and sometimes in the car, Daisy will shiver.
I wish you the best.