Two options for you:
Catch the bus right at the WL that goes to the TTC. The bus is shared with FW so you might go there first then to TTC.
Or, the scenic route- take the water launch to the CR and catch the monorail around to the TTC.
Bus is probably quickest- particularly if it is the time of day when it has already picked up FW and heads directly to TTC from WL.