I've seen a lot of posts on this but I just want to understand at what point should I be concerned about lack of mobility in 1yo DD. She currently sits well, but is unable to get herself into a seated position herself. She leans forward to reach for toys but does not attempt to go beyond her reach. She only rolled for the first time at 10.5 months, she still does this but it's occasional, she does not like to be on her front.
She does not try to pull herself up or stand and when we encourage her to walk or hold on to something standing she immediately topples over.
Just wondering if anyone has had something similar. As standard she is the only NCT baby not to be doing it and I hate taking her to soft play with them as she gets so frustrated and I have to sit with her permanently.