A 1ml syringe will either have 100 graduations (.01ml), or 50 graduations, (.02ml) If your syringe has 50 graduations (.02ml), the .01ml is simply between the marks.
If you make a dilute solution where .1mg=1ml then each .01 graduation on the syringe will be .001mg.
Actually, its rarely ever necessary to measure down to thousandths (.001mg), so every 10 marks (.1ml) and the syringe will allow to measure down to hundredths (.01) of a mg.
And the whole concept of a DLMT is NOT about precision or accuracy, its about a gradual reduction. If there are small discrepancies day-to-day, dose-to-dose, it really won't matter. And a great advantage of dilution is it dramactially reduces the error factor. With a .1mg=1ml solution, if you make a measurement error of .01ml, that's only .001 (one/ 1thousandth) mg.
Your tablets vary far more than that, dose-to-dose.