I’m changing my 7 year old & 5 year olds cat food to a higher quality brand. I’m mixing 25% wet new into the old & 25% dry new into the old dry. They like the dry but avoiding the wet food now that I’m really mixing it in instead of separating it in their dish. At first they’d eat the old wet food and leave the new wet alone…so I started mixing it. We’re only on day 3. Any suggestions?