@Fary Yes, he responds to his name, he can maintain eye contact. He knows for example how to clap, he can play peek-a-boo, but he can't wave. When I play with him, he seems to be interested, but he gets bored very quickly
Following - Wow exactly this with my son, HV did flag the lack of waving and pointing. Everything else is good, responding to his name, eye contact, please give me this, would you like a drink. He looks at daddy when I say where's daddy but no pointing or waving. He claps and plays peekaboo too. He's also not walking yet, but is making progress in his own time. As to the attention span, I do know they're really only able to 'concentrate' a minute for their age so don't worry too much. 1.5 minutes ish is about normal for any one activity
I think my daughter learnt to point from me pointing to things in her books then after a while I'd ask her to show me. It took a few weeks of lots of repetition!
Does he make good eye contact and respond to his name? Does he understand any basic instruction? Does he engage with you whilst playing with a toy he likes?