I had mine taken out 2 yrs ago. I probably went 2 wks without solid food, or maybe a whole month. I'm not really sure because I was so numbed on prescription drugs the whole time. I slept, I woke, I ate, I played videogames, then slept again. I do remember drinking lots and lots of Ensure though. That was my primary source of energy.
Another thing I remember was how my uvula felt like it was falling into the back of my throat. That thing was elongated for some reason and kept hitting the back of my throat. It made me gag randomly.
After the initial healing period was over, I went back to exercising. Then found out I would randomly get these urges to throw up, even during light physical activities. I braced through the throwing up episodes and they went away after about six months.
I lost so much weight during the recovery period.
Now everything is better. No more remnant of the tonsillectomy.