is it safe to give a small dose of temazepam to a cat weighing 4 kg? He needs lancing of an abscess and vet unavailable until Monday. Have sterile equipment available and EMLA cream

Optional Information:
Type of Animal: cat domestic short haired
Gender: male
Age: 9

Already Tried:
Have already cleaned catbite abscess which appeared to improve and dried. Today the area is bulging with an obvious collection of pus underneath. I tried to clean it to dislodge a scab to hopefully release the scab but it is now healed. It is exquisitely painful, My vet is unavailable for 36 hours. The recommended emergency vet is 10 miles away and the cats goes crazy on a car journey.

I have EMLA available (+ injectable lidocaine 1%), sterile field, scapel and Fucidic acid ointment. I would take him to the vet on Monday in any case. I have some temazepam 10mg tablets (human medication) and wondered if this would be helpful in a small dose. We already use a plug-in pheramone dispenser but I have 2 toms that spar regularly.

ps I am a trained nurse but not veterinary.