my premature twin baby is now 11 month old, but they are still not seating. please suggest.

A. Usually babies sit around four to seven months. By eight months most if them would be able to sit without support for few minutes. But this is not a definite rule and some babies can have a delay in reaching milestone. This doesn't necessarily mean any problem. Your babies should get their muscles strong enough to balance themselves and it could differ with each baby. So keep encouraging them to sit by keeping pillows on their sides. They should be sitting soon. Also since ur babies are premature u should track their milestones only based on their corrected age.