You only have to produce a teaspoon each day for the seven days. This gives us 35ml. That is your target.
Don't worry it will be easy as long as you stay teased and denied!
My highly skilled nurses and therapists are very persuasive and will coax all your pre-cum out of those little balls of yours and you should know that we have some very effective punishments and tortures if you fail....more about those later!