The actor has finally completed his take on the famous play and hopes it will become the standard one shown to kids, rather than the old-fashioned versions teachers often dig up.
Speaking to Sky News' The UK Tonight programme with Sarah-Jane Mee, Ms Nelson described how her girls were diagnosed with the condition only at six months, despite repeated visits to the GP and healthcare visitors checking in on them.
Rhodri Talfan Davies, who led BBC Cymru Wales from 2011 to 2020, will begin the new role on 3 April until a new, permanent director general starts work.