ratio: one extra baby for 2 weeks only

Hello, a lady has contacted me for a 11 months old for only 2 weeks in July ( she usually uses her family but need help for 2 weeks only).
I haven't met the lady yet as I need to know if it's OK with my numbers.
I have a few days a week 3 under 4 ( 8 months old +2 yo +3yo), some days 2+3+3, some days (8months +3yo)
Can I have 2 children under 1 if it's only 2 weeks?
Can I have 4 under 5?
It would be a shame as this lady is stuck for 2 weeks but at the same time I want to make sure I'm doing the right thing
Thanks
V

Unless this baby is a sibling of a child you look after then you cannot look after her under the regulations.

This is the EY info:
Registered childminders can look after up to six children up to the age of eight. Of these, a maximum of three can be under fives, who are classed as 'young children'* and a single childminder can only have one child under one year old. This ratio includes the childminder's own children if they are under age eight.

If childcare is being provided for older children at the same time, this must not have an adverse effect on the care of children receiving early year’s provision.

Childminding Ratios Variations/Exceptions

Exceptions can be made when a childminder is looking after a sibling baby, or their own baby, if the childminder can show that the individual needs of all the children are being met. This would have to satisfy parents and inspectors.

If children aged four to five only attend the childminding setting during school holidays, or before and after school, they can be looked after at the same time as three other young children - as long as the total number of children under eight years old does not exceed six.

If a registered childminder partners with another registered childminder, or employs an assistant, each one of them can care for the number of children specified by the ratios above (subject to any restrictions imposed by Ofsted on registration).

Children may only be left in the sole care of an assistant for a maximum of 2 hours at most in any one day, and childminders must obtain parents/carers' permission to leave children in the care of an assistant.

The ratios above also apply for childminders providing overnight care.

Thank you flora, I thought we could have 4 now, my mistake. I will not be able to help out then.

No,as it would be new work not a sibling.