Shouldn't you be somewhere like 40 dgrees before TDC on the compression stroke when you setup for the test? Then you rotate the crank up to the pioint of one drop per second.
Normal timing is before TDC so if you start at TDC you will be past and have to rotate 2 revolutions unless you were talking about TDC before the intake/compression stroke...

I find it simpler to set it up at about 30 degrees before TDC and then rotate from there as you don't have far to go. Also if the belts are tight you can use the alternator pulley bolt to turn the motor if it's a one person job. I just turn a couple of degrees at a time, then check, then turn, then check...

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