Do not massage his crop at all. If you don't want to give him food, that's okay, but do give him water. Call Hunter Vet and see if they can see him today. 509.327.9354 (I tried but could not get through).
DO *NOT* cancel tomorrow's apointment.
Glad you were able to make the appointment. :hugs. In the meantime, the best thing to do is to keep him in a warm and quiet place with access to food and water.
If you're gonna do it, you need to call them and let them know that your friend called them and told you that you needed to call to confirm dropping him off. You need to do this now, not tomorrow.
They can't get you in today, but they can see him tomorrow morning and the vet will see him between appointsments. You can drop him off at 8:30 am.
Mt Spokane Veterinary Hospital
17117 N. Newport Hwy
Mead, WA 99021
Phone: (509) 238 1585
Another place I tried calling is Hunter Veterinary, but...