My DS is 12 months old and has a gross motor delay. He can't get into a sitting position on his own (though sits unsupported easily), doesn't pull up or cruise though can stand for ages if you hold his hands, can't crawl or roll from his front to back. He's just started physio but struggling a bit with the exercises!
There is apparently nothing physically wrong with him and in all other areas he's great.
Did anyone else's baby have a gross motor delay? How did they get on eventually?