Do yourself a big favor and just get them removed altogether.
I had tonsilitis several times within a 4 year period. Each time, the doctor said "gargle salt water, get some cough drops" or they put me on an antibiotic.
The last time I got it, I was on vacation (fishing trip). The tonsils became so swollen, I could barely breathe. I had to be taken to the hospital, and a doctor had to "lance" each tonsil to get the puss to drain out. This was the most painful thing I've ever experienced.
After that episode, I had my tonils removed. It was done under local (a narcotic). I didn't hurt at all, and took about an hour. I was sent home with a bottle of codeine and some percocet pills. It was really no big deal at all -like having a cavity drilled. The next day, I was eating pizza.
Trust me on this -if your tonsils get infected, they will get infected again, and every time it gets worse and worse. The antibiotics are also bad for you. Just get them yanked! Insist on it.