SEN Funding for extended nursery

[unpaidhelp]

Don't know if anyone can help, but reading some SEN statementing threads has been BRILLIANTLY helpful to me..
DS, 5 in December, has moderate/severe learning diffs, no cause diagnosed. Have achieved full statement, have won extra year at nursery, deferring school entry for 12 months. Local SEN team actually hugely supportive and understanding. Now wondering if there are any precedents to quote re: funding for the extra year at his (private) nursery?
EYFS funding apparantly separate dept. to mainstream school. EYFS of course only to age 5, have got all I wished for relatively painlessly, but would like some advice, as we are hard pressed to fund for increased hours without LEA help, partic, as statement requires 1to1 adult support.
Nursery also very supportive, but whilst continued attendance here undoubtedly cheaper than supported help at primary school, seems to be different budgets etc.

EYFS actually lasts up to the end of reception so until some children are nearly 6.
I would guess it would be easier to get a full-time place at a school based nursery than funding for full-time private nursery.
LAs can fund full-time education otherwise than in school - you could ask for the statement to say your child requires education otherwise than in school and the LA to fund a full-time nursery placement. You would have to argue his needs could only be met in nursery and not in school. Fulltime school would be about 32.5 hours a week (including lunches) anything over that would be considered private childcare.
The presumption is a child should get full-time education over age 5, but as you have asked to defer they may say you are flexi schooling or home educating and only entitled to the 15 hours.
The starting point should be how much education does your child need - this does not have to match school for e.g. my child gets 35 hours per week 48 weeks per year which is more than full-time school so it can be based on what is needed not just on what other children get.
An alternative if you need full-time childcare is to get a disabled children's team assessment and try and get some childcare funded by social care as respite.