We had our sons tonsils out 3 weeks before his 4th birthday. His were enlarged (as were his adenoids) and they were causing him to have sleep apnea. Actually, we had no idea this was even going on, until my husband took him camping, and was sleeping next to him. I couldnt believe when my husband told me that our son stops breathing in his sleep!!
I took him to the drs as soon as they returned, and that is when we discovered his tonsils were blocking his airway when he slept.
The procedure was quick, about 45 mins we had to wait while he was in surgery. I was, of course, scared out of my mind, but everything went well. And the staff at the surgical center was very accommodating to us.
We brought my sons lovie, his favorite blanket, and his own juice cup. I'm so glad we did, because we had to wait in recovery for hours, and those items relaxed him and made him so much more comfortable.
As far as the age goes, we were never told to wait until he was older. I think his case was severe enough, they wanted to take them out sooner, rather than later.
He spent about 24 hours on the couch watching TV. Then he was back to bouncing around, and wanting to eat. I couldnt believe how well he recovered. Having had my tonsils out in my 20s. His recovery was nothing compared to what I went through. Within 3-5 days we was totally back to normal. His sleeping improved, his mood improved, his appetite improved. I was nothing but pleased with the procedure.
Good luck!!