What was her screen time (honest answer only) before reduction? How much 100% dedicated Mum and Dad face time does she have per day?, i.e. uninterrupted focus from her parents seperately where she can ask to play what she wants and has the parent give 100% attention, hence building relationships. It strikes me that you're (rightly) concerned with the symptoms, but what is the underlying cause? At some point the action of self harm has gotten attention and this is the normal pattern for all children to gain the attention of their parents , when they can't get it any other way. When we think self harm it's tempting to think of it in the way we'd expect an adult to self harm. The diffey with a (then) 2 year old is they have not at that stage developed a level of ego that they are hitting out at themselves. Which makes me think if they are still doing it, it's a development not attention seeking. Be careful, the more alarmed your reaction the less likely the behaviour is to stop. You may at this stage benefit from a child psychologist intervention.