Day 3 -
Today you will have to swallow your entire load. Let this whore be your inspiration. There is no time to waste in this training. Every last drop. When you cum, I want you to kneel and imagine a big black cock standing above you, then show him the cum in your mouth and swallow it. Don't forget to thank me.
One thing which you unfortunately cannot simulate by yourself is the pressure to swallow. Someone standing above you and forcing you to do it.
Try as hard as you can to force yourself. Don't think, shut off your mind and swallow.