Tian Ma, a decade horse and an annual horse are not three notices that you will move house. They belong to different chart layers. Their count is not a count of future relocations.
Check the timing attached to the name
In a common method, natal Tian Ma is placed using the birth-year branch. Methods that include decade stars use the decade branch for the decade horse; the annual horse uses the selected year's branch. Check which stars and naming conventions your chart actually includes.
Their positions can differ or overlap. An overlap does not mean that the natal star has been copied or that its effect must be multiplied. Schools also differ in their placement methods, so avoid mixing assignments from incompatible settings.
What kind of movement is the question about?
Tian Ma has traditional associations with movement and changing surroundings. Commuting, taking an overseas assignment and moving home remain different events.
Imagine one person traveling frequently while keeping the same home and employer, and another moving because a lease ends. These hypothetical situations call for different questions and relevant palaces. Neither establishes a horse-star placement.
Record each timing layer and specify the event being discussed. If the question concerns moving home, an unusually busy work year is not a substitute outcome. Keep a predicted move that did not happen in the record rather than redefining all activity as relocation.