Counterfactual generation aims to simulate realistic hypothetical outcomes under causal intervention. Diffusion models have emerged as a powerful tool for this task, combining DDIM inversion, conditional generation, and classifier-free guidance (CFG). This study identifies a key limitation of CFG: its global guidance size for all attributes, leading to significant false changes in inferred counterfactuals. To mitigate this, we propose Decoupled Classifier-Free Guidance (DCFG), a flexible and model-agnostic guidance technique that enables attribute-specific control along the causal graph. DCFG is implemented through a simple attribute-partitioned embedding strategy that decouples semantic inputs, enabling selective guidance for user-defined attribute groups.