Yes people were being reassessed 12 months before but due to coronovirus it is now 6 months before. You need to check your award as if it is an end date award and not a reassessment you’ll have to call up and get forms again to fill out before the 2021 date so you aren’t left without. If it is reassessment award then I would wait until 6 months before end date before calling for a new form. The other option is you can call and say you are worse but this will often mean reassessment and you risk loosing it all. Personally I would wait until 6 months before award is due to finish then call them.