Gender based on parents mutation

Trying to figure out a gender of my cinnamon pied tiel who is 3 months old. It’s hard to judge from the behaviour. It’s been with us only over a week but it’s super confident, inquisitive and not shy at all. It doesn’t sing though (does flock calling when we leave the room) and it started making this weird noises like female mating calls…
The dad is normal pied and a mother is whiteface with cinnamon on her wings. Unfortunately I don’t have any photos of the parents, just 5 babies they produced. Would you be able to help please? Thank you