My kitten is almost 7 weeks old. Someone who claimed he was 8 weeks gave him to me as a stray. Jasper had fleas that ate up the tip of his tail (lysine has helped grow his fur) and his left eye had conjuctivitus with clear discharge. The doctor diagnosed him with an upper resp. infection (although Jasper didnt exhibit sneezing cold/flu like systems until a week after visit) prescribing eye drops and viralys supplement. During the vet visit, Jasper weighed barely a pound and dr claimed he was actually about 5 weeks old. The eye drops helped, but did not cure the eye so now he is on oral antibiotics (doxy hyclate) 25g/mL 0.2mL 2x a day. It's day two. When should I start seeing improvement? the sneezing is a bit better.