Watching that video made me feel very uncomfortable, particularly for the wee bairn. If I was supervising that contact between child and caregivers then writing up a report, I would be saying that her interaction with him was forced and definitely not relaxed. That child did not react to her like she was his primary caregiver, and he was seeking out the person filming the video. The baby's response towards her were of distress, then frustration, whereas he smiled and appeared to be reaching out to the person filming the video. When she snuggled up to him making the duck noises he did not respond with laughter or pleasure or glee as any toddler would if this was a regular mother-child interaction, he appeared uncomfortable. We all know babies say dada before mama, it's easier for them to pronounce, but his wee face lit up when he looked towards the person filming (assuming it was Harry). The only smile captured in a still from the video was a fleeting smile, not aimed towards his mother, but I cannot pinpoint exactly what or who prompted it. In fact, whilst in his mother's company he seemed agitated and upset. Her priority was not her baby's needs or responding to them but her own agenda. The person filming seemed more invested in the child and in eliciting a happy response for achievement at the end of the story, thereby prompting the mother to recognise the achievement too.
It's all very sad for the child, but there is still time for him to be saved from a lot of heartache if dada and the extended family could put their minds to it.