I've raised £2000 to to help raise funds for SDR surgery for my son with cerebral palsy.

I am looking at raising funds for surgery for my son with cerebral palsy. SDR surgery is not avaliable on the nhs, and the benefits of surgery are amazing. For my son to recieve this i have to fundraise £40,000 for surgery and physiotherapy after the surgery. I have set a smaller target for now to be realistic, as i will have to find otherways to fundraise also. I would appreciate anything that can contribute, to help my son live a better life ready for his adult life. Surgery is best done before the age of 10.
What is Selective Dorsal Rhizotomy (SDR)?
SDR is a surgical procedure aimed at reducing spasticity (tight and stiff muscle tone) in the lower limbs by dividing some of the lumbar sensory nerve roots, thus interfering with the reflex arcs that cause increased muscle tone. It's mostly used for children with spastic diplegia (two limbs affected). Spastic diplegia accounts for 25 to 30% of children born with cerebral palsy.
Aims of SDR surgery
The surgery aims to:
achieve a long-term reduction in spasticity
improve function and mobility
increase independence
increase range of motion and improve positioning