Speech delay/autism

My son will be 2 in Feb but is quite behind with his speech, he can say maybe 10 words but that’s it. He understands quite a lot of what I say and can follow instructions, he can point to colours, numbers and animals in books ect when asked. The reason I am worried about autism in addition to not talking is because he doesn’t always respond to his name and gets very fixated on things such as the tv (I do try to limit it) and doesn’t always give eye contact or wave very often or nod yes, although will jump, clap and does some actions to songs. Does anyone have any advice please? He’s not had two year review yet and is not at nursery.