My son is going to be 2 soon. He has the same diagnosis. He began walking around 18months, he had low muscle tone but the PT worked with him and his motor skills have improved so much! Your son will get there at his own pace but I would encourage you to use any community resourses that you can, as soon as DSS will sign off. Although our son is not yet talking he has been making improvements with his communication skills, he also has speech therapy. He is home with me all day and not in daycare so he doesn't get as much interaction with other kids as I would like so that may also contribute to him not talking.
He was born with a cleft palate, which is repaired now and fine.
At 6months of age they found a benigne brain tumor (DIG) in him which was completely removed. He may also be a little behind in his speech because he spent a month in the hospital then and had a lot of catching up to do.
Despite all this our son is doing great and noone we meet can ever tell he has a "syndrome" or had a brain tumor, etc. Like I said he is behind in talking, however he is improving. Just keep working with your son, he may be behind now but he is still so young and has pleanty of time to catch up.
Feel free to email me if you ever have questions or want to chat. good luck with everything and stay positive.
amykirk1110@verizon.net