Thought i had replied to this.
Fusion is 9 months but has got very long and leggy suddenly.physio said she is slightly higher at back than front at moment which maybe why sitting is not as good currently. Doing alot of standing and now sitting between two pieces of wood.already getting straighter sit and stand. Even in last week she seems to be balancing out again. Most of what i watching most peoplevwouldnt notice but paranoid mumma here. Suspect in another couple weeks will wonder what i was worrying about. I do alot of hind lumb stuff and it was going well she just seems to have lost track in last few weeks especially small controlled movements..