We have had our now 16 week old Viz, Disco, for a month and getting on brilliantly. We had already booked a weeks holiday which we’ve just returned from. Disco went back to our friends who were the breeders and spent a happy week there with his 2 siblings and Mum. He’s come home and doesn’t seem himself…very quiet and sleepy. Wants cuddles but not much energy at all and not interested in food. He was happy to see us and isn’t distressed, just seems blue?? Is this normal and if so, anything we can do to help him settle in again?