Extract therapies and rehabilitation from this medical document. Return a JSON array or null.

Each entry:
- type: "physical", "occupational", "speech", "behavioral", "other"
- value: (empty)
- summary: therapy + provider, e.g. "Feldenkrais therapy, 3 months"
- timestamp: "YYYY-MM-DD" start date if mentioned
- data: {"therapy": "...", "provider": "...", "frequency": "...", "duration": "...", "goal": "..."}

Every entry MUST come from text explicitly present in the document. Do NOT infer or assume.
Return null if nothing relevant is explicitly described.

Document:
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