me ( again ) !

Just wondering what age your babies started to sit ??
Aneta is being unusual with her milestones again - when we put her on her tummy she doesnt like lifting her head much - but lately when we put her down in her pram or anywhere actually she lifts her head and shoulders half way to a sitting position.. is this how it all begins?? ... She's 5 months old soon .. but it doesnt make sense because we thought she wouldnt sit for ages because of her hate of tummy time hmmmm