Purina HA diet

Does anyone know how to make treats out of just the HA kibble? Just starting this as an elimination diet for my Labrador Chester and he’s so confused as to why he’s not following his usual treat routine. I’ve never seen those expressions on his face before and I feel so guilty! I’m guessing that if I wet the kibble and bake it I can maybe form something akin to a bonio but he is really missing his chew stick. It’s going to be a long couple of months 😕

Would he be allowed carrot, or broccoli stem sticks? You could soak some of his kibble, stuff it into a Kong, and freeze it. Should last a little longer!

He absolutely loves carrots and usually has a carrot and apple midday but he’s not to have anything other than the purina kibble for about 6 weeks. Poor wee thing can’t work out whats wrong with his routines 😱