My DD is about to turn 3. Her bilingualism is roughly balanced at the moment.
We are an OPOL family, living in the UK.
DH's language is English (L1, majority)
Mine is Spanish (L2, minority)
I am her main source of the L2 and have tried very hard since birth to fit my work around her, so she gets a lot of exposure to L2. I have also gone/still go through the awkwardness and sideways glances at playgrounds, playgroups etc. So I don't want to go and spoil it all now! 
Whenever possible, I have kept her nursery days (in English) down to 2 or 3 days a week.
My question is, is 3 too young to increase the English nursery days to 3 or 4, or would it be advisable to hold on a bit longer (or even until she starts school)?
I am trying to plan ahead for when her Early Years Ed funding kicks in. I don't want to loose out, but I don't want to dilute her L2 either!
Any experiences of this out there?
Thanks All.