12 year old cat with URI

My 12 year old female cat was diagnose with URI Oct 1. She was first put on Tobramycin and Orbax. About 2 weeks ago she was put on Clindadrops and cerneia.  She has been on Lysine since November 3. Her weight is good and she still eats. I do the shower sauna twice a day for her

She does appear to be getting better slowly but is not cure. By getting better, I mean there a periods when she is not congested or only mildly congested. 

The online websites for cats all suggest the the natural course is 2-3 weeks.

I am worry that she is not responding well. Does it take a while to cure? Is this going to be a chronic condition.? Can she live a good life with it? Any help would be  appreciated it.

She should've kicked it by now. I'd take her back to the vet or at least call them and ask for the doctor's advice.

Maybe you should call your vet and talked to him about it. It would not hurt to call another vet about it too. You can get more than one opinion. I wished that I had gotten more than one for my pet. My vet gave the wrong diagnosis.

It sounds like you've done all the right things for a URI - completed a course of antibiotics and "steamed" the cat in the shower to decongest her.   A URI should fully clear up in 7-10 days with antibiotics - really, you should see a big improvement after a couple days of antibiotics.   I have one cat who is sort of prone to URI's and each time a course of Clavamox always clears him up.   It's worrying to me that your cat has gone through 2 courses of antibiotics and is still sick?  She still needs medical help.  I would first contact the vet you've been seeing - let them know your cat is still sick and see what they think the next course of action should be.   If what they suggest doesn't sit right with you, I'd look into getting a second opinion - I'd probably look into doing that regardless, it never hurts to do so if you can afford it.   Vets are people too, and sometimes what escapes one vet will be glaringly obvious to another.   Good luck to your kitty!!