Prarabdha karma - the karma already in motion - sets the terrain. The broad chapters of your life, your fundamental temperament, the domains where grace flows easily and where friction recurs. This is largely fixed. Jyotish reads it.
Kriyamana karma - what you generate now - is where free will actually lives. Not in changing the terrain, but in how you meet it. The event may be fated. The quality of engagement with it is not.
Dharma adds another layer. Your nature isn't chosen - it's discovered. Living your dharma doesn't feel like radical freedom, it feels like recognition. The freedom is in whether you align with what you actually are, or spend your life resisting it.
Free will is less about changing what happens and more about changing what you become through what happens. And what you become shapes the momentum you carry forward - into the rest of this life, and in the traditional view, beyond it.
Jyotish at its best doesn't diminish free will. It clarifies the actual playing field so that whatever freedom exists can be used more precisely.