Probably depends on how much information the remedial asked you to provide. DD had a remedial for a broken foot. Her response required no follow-up with a medical professional - just a note that she had been physically active and suffered no ill effects. If the remedial requires stacks of medical records, it could take longer. DD was cleared to go within 2 weeks of submitting her remedial package.
Plus - you are sending information into a government bureaucracy - they aren't in any hurry to process it.