Antibiotic Resistant??

This weekend was tough. Remis ear infection is STILLLL NOT GONE!! Last time I blogged, we had just started his 2nd antibiotic. Well, another 5 days passed and Remi didn't seem any better. I called his doc to ask for advice and they immediately said to bring him in.They checked his ear and was shocked when they saw his ear infection was still there..and no where close to getting better. They recommended injections- antibiotics given through a shot. Yikes! But we were going to do what was needed to make our sweet baby feel better. So 5 mins later they gave him a shot of Rocefin. I am super allergic to most antibiotics so with that precaution, they had us stay in the room for an additional 30 mins to watch for reactions. This was a pretty harsh and strong antibiotic for a baby so they wanted to cover all ends. Then- they also recommended we start a 4th oral antibiotic the following night (this all happened Friday). We talked about his infection or even his body being resistant to antibiotics, which in rare cases it happens in 10% of babies. Our goal was for him to start feeling better by the next day or Monday at the latest. If in fact he was not better by Monday, we will have to schedule an apt with a specialist, ENT, to discuss further treatment/options.
It is now Sunday, and I can't say he's doing better but he isn't worse. He still grabs his ear, cries a bit and isn't eating. Hes ate one time between midnight and 2pm. He has also been sleeping alot today- since midnight,woke up once for 30 mins and is now back asleep. I am still contemplating whether to make an ENT apt whether or not he is feeling better by the morning. My concern is- he hasn't made a noise (other then crying). He was a super vocal baby but ever since he came down with this infection, he hasn't made a peep. I'm worried that this may have caused hearing damage.

I guess its a waiting game. The next 24 hours will be super important.