no need to worry too much. my daughter did not talk very well in April. suddently she talks a lot since May. Now, we call her talking machine, never stop...
the same as my son, but he is better during these 2 months. I think it also depend on the environment, Indo maid take care him, both myself and husband go to work. I'm not very worry but I have him to go to school as early as possible so that he has time to play with other childred