My DS was 6 weeks premature and is now 26 months corrected age.
He has done everything late, sat up 9 months, crawled 11 months, walked 15 months, first tooth at 16 months! But once he reaches the milestone he does very well, for example now he can climb up and down stairs so quickly and most times without even holding the banister.
The only thing I'm worried about now is his language. His communication has been coming on very slow as well. He clapped around 12 months, waved bye around 16 months, and he has only recently started pointing maybe 2 months ago. Now he points to let us know what he wants, and also to point out whatever he finds interesting. For example when he goes out for a walk he always points out the bus and waves to the bus driver, who waves back at him.
He has a few words now, but they are very unclear. Eg, when he wants to sleep he takes me hand and drags me to his cot and says 'seeeeep'. He can say a few words more clearly but most are very difficult to understand. He can also say most numbers from 1-10 and the alphabet from A-F clearly. His understanding was a bit slow as well but now he can understand one and two step tasks like 'pick that up and give it to _' etc.
I know he was slightly premature so that could be why he's taking his time but does his progress seem ok?