I feel sorry for the little guy. Based on what she says about the trouble she has with him, he is obviously very frustrated and needs some extra support.
My son had very little speech until he hit 3.5 and it came on in leaps and bounds. He’s autistic ❤
Nursery will almost certainly raise concerns if they think he needs to see a paediatrician. And if a three year old isn’t speaking, they need to see a paediatrician. Only question is, why hasn’t Megan sought help sooner? I know Covid has caused massive problems with the NHS, but consultations were still happening over the phone and via video call. I know because I had them!