Unfortunately the requirements have changed and ALL registering childminders must have completed the pre-registration course before Ofsted visit them.
There used to be a 6 month window but it has now been removed - it is a pre-registration requirement.
You can clarify this in the EYFS - requirement 3.23 -
3.23 Childminders must have completed a local authority approved training course which helps them understand and implement the EYFS
before they can register with Ofsted.
https://www.education.gov.uk/publica...DFE-00023-2012
I hope this helps :D