Baby speech development. Good progress?

My baby boy is 20 months old(19 months corrected) . Height is 82cm and weight 10.5kg His birthday weight was 2.5kg(at 36 weeks 2 days). He met all of his milestones almost in time. Started walking at 16 months and now running. He is speech delayed. He says mumma, papa, baba ,dada. He knows who mumma and puppa are but when we ask de doesn't point. But otherwise he points with index fingers to. things he wants. He repeats some words er say. We are native bengali speaking. He repeats dudu, cucumber in Bengali, aa baba as lip balm, tiger, aja as come here , leaf as pata etc . I was signing wheels on the bus go round and round and he was also singing after me .Are these good progress? I get so worried sometimes. Trying to teach him to repeat as many as possible.