Appeal if the LA refuse to issue, the majority of appeals are upheld.
During a needs assessment the LA must seek advice from:
"a) the child's parents or the young person;
b) educational advice (usually from the head teacher or principal);
c) medical advice and information from a health care professional;
d) psychological advice and information from an educational psychologist;
e) advice and information in relation to social care;
f) advice and information from any other person the local authority thinks appropriate;
g) where the child or young person is in or beyond year 9, advice and information in relation to provision to assist the child or young person in preparation for adulthood and independent living; and
h) advice and information from any person the child's parent or young person reasonably requests that the local authority seek advice from."
SEN regs 6(1)
Note H - you can request SALT, OF and psychiatrist or CP assessments. All would be reasonable for a pupil with SEMH difficulties, ADHD and suspected ASD. I suggest you do so in writing. Without SALT, OT and psychiatrist/CP assessments there won't be any SALT, OT or MH provision in the EHCP as provision is taken from the reports. Have you had assessments by your local planning for adulthood service and social care?
The LA must consider independent reports, but in reality they often 'consider' and ignore them, preferring their own reports. What week are you on? If there's only 3 weeks left it sounds as though all assessments should have been conducted by now.
There are specialist colleges. The choice increases if diagnosed with ASD.
It is the LA who are responsible for medical needs tuition. DC should have been provided with a suitable and appropriate education. If DC was not able to access online provision then it was neither suitable nor appropriate and the LA should have provided another form of education, and you could have forced them to via Judicial Review.