I've raised £2000 to Help fund the purchase of a Van Raam O-Pair Bicycle

My son has downs syndrome and its going to be a long time before he can ride a bicycle I currently walk with him in his Snappy mobility pushchair which can sometimes take forever and is limited or hard to push on certain surfaces, imagine having a bicycle which I can just pop him on and we can pack up a picnic and cycle off anywhere, Salisbury plain is within cycling distance from where we live we could cycle there and he can run around have some for m of freedom instead of being stuck in a pushchair etc
I simply cannot afford to purchase one of these without any help I am a single parent and I am James full time carer I don't work so money as it is, is a rarity lol I would be eternally grateful for any help towards this but I know James would just love the extra freedom it would bring