IF and that’s a big IF, the west face sluffs off, there will be about an 8 hour lapse before it starts hitting the east coast. ALL of the east coast. Not just FL. Read someplace recently the tsunami could travel as far as 12 miles inland. Wiki link to Cumbre Vieja tsunami info:
https://en.wikipedia.org/wiki/Cumbre_Vieja_tsunami_hazard
150 ft tsunami hitting east coast of US. Way more than 12 miles inland.
Wave travels inland until it hits a landmass equal to the wave height - its called a standing wave. Its a wave caused by displacement, rather than the usual subduction wave tsunami, which is a subsurface wave - standing waves travel across the surface of the ocean equal in height to the mass of the material that displaced the water.
See Latuya Bay AK