Finally, I got down again, for three sets of 1,000 deepthroats.
I started having burps towards the end of the second set, I suppose due to all the drool I swallowed. Besides that, so far, my throat is still alright, a little bit snot. I tried to count 10, 20, 30, 40, 50, and managed to do nearly 300 deepthroats straigtht at most. The sets took me 5 minutes 16 seconds, 3 minutes 39 seconds, and 4 minutes 1 second.