Scope community team
Welcome to the community.
Some of the things that you describe could potentially be indicators of a child having a condition such as cerebral palsy (cp) but not necessarily so. I think the important point here is that you have concerns and you sound as if you need those concerns addressing by an appropriate person. It would not be appropriate for me to speculate if your daughter has cp.
By definition, cerebral palsy is a disorder of posture and/or movement that results from the immature brain either being damaged or failing to form correctly. It is a diverse condition that affects each individual in a way that is specific to them. It can display itself in a way that is similar to other developmental conditions. Diagnosis is normally made by a paediatric doctor after a period of observation and tests to rule out the possibility of other conditions. A brain scan can often assist with identifying areas of brain damage but not in every case. There is no stand-alone test for cerebral palsy, diagnosis is more of a process that looks at evidence from different sources (such as medical history, general tests, scans and observation). The average age of diagnosis is 18 months but sometimes much later, especially if the person is only very mildly affected or has other health issues that are complicating matters.
Here is the link to the DLA ‘how to’ pack: https://contact.org.uk/media/1172324/claiming_dla_for_children.pdf
I also mention some info on the Scope website that might be of interest: