Hi Beckie,
I can completely identify with your post. I’ve had a couple of pupils over the years with similar behaviour characteristics that you outline and it can be really hard in lessons! A couple of things that worked for me were having a plan of activities that I wanted to cover but then letting the pupil lead the activity whenever I sensed resistance. I felt the slightest amount of pressure would lead to disengagement so I tried really hard to remove this. It was amazing how much they seemed to achieve when I removed any expectations and only gave minimum guidance.
With one pupil I had the opportunity to note how their behaviour changed depending on who was around. There were three variations (all took place in my home).
1 Mum with younger sibling in next door room (door open)
2 Dad with younger sibling in next door room (door open)
3 Mum alone in lesson room
The pupil’s behaviour was worse with Mum being in the room during the lesson and there were tears both times even though I had changed nothing in terms of teaching approach. More data would be needed to prove this but I think it added loads more pressure to have Mum in the room with us. Might be something to think about changing.
Remember that you’re probably making a real contribution to your pupils life even though it might feel difficult sometimes.
I hope that helps and good luck:)
James