For the same intruded primary tooth, what is the appropriate management?

For an intruded PRIMARY tooth (especially without evidence of significant displacement toward/damage to the developing permanent successor), the generally accepted management is to monitor and allow time for spontaneous re-eruption, since aggressive intervention (extraction or repositioning) in the primary dentition carries its own risks to the underlying permanent tooth germ. Immediate RCT is not the first step for an intrusion injury without other indications (like signs of necrosis developing over time).