Clarifying the role of ODT in the synthesis of colloidally stable NMLs paves the way to develop protocols to synthesize size-controlled NMLs. There are different key factors in wet chemistry synthesis that can modify the final nanocrystal size and morphology. Because the 1T'-WS2 NMLs synthesized by ODT are colloidally stable nanosheets, different parameters in this protocol are modified to produce size-controlled and well-dispersed NMLs with diameters ranging from 10 to 60 nm. If the formation mechanism of WS2 NMLs occurs through nucleation and growth, regulating the injection rate should alter the rate of nucleation, and the mean size and the size-dispersion of the nanosheets should also change. Thus, the first parameter used to control the mean size of the final products is the injection rate. Reducing injection time should cause an increase in the nucleation rate, and consequently, the mean size should reduce. On the other hand, prolonging the injection time reduces the concentration of precursors in the reaction mixture, which decreases the nucleation rate, and thus the mean size should increase. Although the jellification of the injection mixture (through oleylammonium dithiocarbamate formation) limits the injection time, diluting the injection mixture with excess OAm (10 mL instead of 5 mL) makes it possible to prolong the injection time.