DLA change of circumstances query - part time to full time education

Hello thank you in advance for taking the time to read this. My son is 11 and, frankly, a legend. He is autistic (moderate to severe) with a demand avoidant profile, has generalised anxiety disorder plus separation anxiety and OCD, presents with selective mutism when under stress, has developmental coordination disorder aka dyspraxia, an eating disorder called ARFID and due to years of unmet needs in mainstream school which led to almost three years of a part time timetable and a trip to SENDIST Tribunal, has PTSD/school related trauma. At the time when I applied for it, we had some of our own evidence supporting the above from our private experts as part of the Tribunal process and it was on this basis that we were awarded the middle rate of care and lower rate of mobility. One of the things I mentioned in the application was that, due to the part time school timetable of just 8 hours per week, he needed additional care during the day.

Happily, this has now changed and he is in a fabulous special needs school where he is attending full time and doing well, catching up on his education. I have finally received his final EHCP from the local authority and I wanted to know if I needed to submit this to the DWP by way of reporting a change of circumstances. I know that I am obliged to do so in the event that "the level of help they need or their condition changes" and this is not the case as none of the needs have magically gone away but some of the care hours that we were providing as family members are now being provided by the school and his anxiety elsewhere is more manageable as a result.

I am worried that if I don't report this change that I will find myself with a future clawback and want to head that of but, likewise, I don't want to reopen his case unnecessarily. It already took 18 hours of work and a 5 month wait to apply for and get the benefit in the first place and I am happy to say that I only feel I was in any way successful thanks to the amazing guides provided here.

Your advice and opinion would be appreciated. Many thanks