Rosa: for what is worth I think you are doing the right thing. 2.5 is very little and still needs the fluffy environment of a nido. They need cuddles and quiet time for a nap (which is done also in a scuola materna obviously, with more children I guess though). And they do lots of stuff in the nido. And obviously you are the one who knows your dd the best. I can see that there are children who are ready for a scuola materna at 2.5, but most of them are just not, even those used to be in childcare.
I'm still keeping my fingers crossed for the asilo, you never know .... . Plus I'll be very sad to leave their current asilo, which true, it's costing us lots of money, but they are so happy there. Ds though has started to ask lots of question about prmary school he'll start in September. I think he is eager to go. Poor things, they have been very brave, with all these changes.