Mae’n ofynnol i Weinidogion Cymru adolygu’r angen am y gofynion a’r cyfyngiadau yn y rheoliadau, a pha mor gymesur ydynt, bob 21 o ddiwrnodau. Cynhaliwyd yr adolygiad llawn diwethaf, sef y chweched adolygiad, ar 30 Gorffennaf. Nodwyd ynddo ddull gweithredu graddol ar gyfer y gylchred dair wythnos nesaf.
Welsh Ministers are required to review the need for the requirements and restrictions and their proportionality every 21 days. The last full review – the sixth – took place on 30 July and set out a phased approach for the next three-week cycle.