He should be due his 2 year check, definitely suggest a speech referral-waiting lists are long so it's better to get him in the system now!
How is his understanding? Can he follow instructions? For example "go and get your shoes" "give me the car".
Will he point to an aeroplane flying in the sky? Or to show you something he wants?
Will he make animal noises or point to his eyes/ears/nose on request.
My eldest didn't really talk until 3, he's 4.5 now and can occasion be difficult to understand but has a vast vocabulary and speaks in beautiful sentences, he is actually very articulate.
He is under the paediatrician and speech therapist and is undergoing assessment for possible asd but he's doing great! He copes well in different situations and is broadly where he should be (advanced in maths) so I'm viewing as supporting him to be the best he can be!
I'm not saying your child has asd so please don't focus on that part of my post btw!
My youngest is 2.5 and the contrast in his understanding, talking and behaviour compared to what my first was like is massive! He was putting 2 words together at 2, started saying more single words (other than mamma, daddy etc) and doing animal noises around 16/17 months.
At 2.5 we can have simple conversations, he speaks in sentences (eg "I put my shoes on I'm going to the shop"), will ask questions ("mammy you finished in the shower?" "Where has daddy gone?" Etc) and can answer questions appropriately ("what would like for dinner?" "Sausages and chips please", "what do you want to play on at the park? "I play on the swings and slide").
Speech therapy is not a bad thing at all op, urs amazing and nothing to be worried about.
He is also still very little and developmentally he might just suddenly start chatting away!
Try not to worry too much (it's hard I know I posted about my eldest so you may well have read one of my zombie threads!)!
Definitely chat with your health visitor at the 2 year check, try not to compare him with other children and also lockdown may well have had an impact with no childminder or other children.