Fel yr wyf eisoes wedi amlinellu, mae Grŵp Cynghori Gwyddonol ar Argyfyngau y DU (SAGE) a Chell Cyngor Technegol Llywodraeth Cymru yn dweud bod pob newid i fesurau’r cyfyngiadau yn cael effaith gronnol. Dylid felly gyflwyno’r newidiadau fesul cam a'u monitro'n ofalus.
As I have previously set out, the UK Scientific Advisory Group for Emergencies (SAGE) and the Welsh Government’s Technical Advisory Cell (TAC) advise that each and every change to the lockdown measures has a cumulative effect. They should therefore be introduced in a phased fashion and carefully monitored.