Where can I find a u-40 insulin syringe that measures smaller than 1 unit? My cat is currently off vetsulin. Had a hypoglycemic incident after her first two units. If I need to give her a dose I wanted to go low. The syringes my vet gave me only measure the smallest amount at 1 unit. ( she would probably need . 5). I’ve called local pharmacies without luck and my vet is no help. Thanks!