Nice to hear that he enjoyed it

Will you be making his next meal a boneless one? Most of the NI minces have bone in them, so if he had NI bone in mince this morning and a chicken drumstick tonight don't be surprised if he's a bit constipated tomorrow and maybe think of giving him some plain chicken for breakfast.
I did the same as Erica (Jessie_Pup) and stuck to one protein source initially and, apart from minces with bone in, didn't introduce bones for the first couple of weeks. I still have to be careful with bones because William is a bone gulper and can't tolerate much bone in his diet without becoming constipated, whereas Louis is a careful chewer and can tolerate more bone.
Mine had NI beef mince tonight with half a trout fillet to chew on!