A frog in a dream often points to transformation happening in stages, much like its own journey from water to land. Frogs are also linked to cleansing, so the dream may reflect a desire to clear something out before moving into a new phase. Being in an in-between state, not quite one thing or the other, is usually exactly what the frog is naming.
The middle stay of a solar eclipse is by the degree of the conjunction of the lights. - William Lilly (1602.-1681.)