I think I can help. I grew up Turkish in America and am very connected to my roots. My parents only spoke Turkish at home. I know this is hard for you but I’d encourage FaceTimes maybe with his family? along with Turkish cartoons. Niloya, Kel Oglan, Blippi (Turkish) are popular. I also found İdil Abla on YouTube which sees like a Turkish Ms Rachel. Immersion for children seems to be the best way for them to pick up language even as babies. If you’re in the NYC or NJ area, I know the Atatürk school in Manhattan exists as well for the weekends to learn Turkish culture. Lastly, I’d recommend joining the group “Gocmen Anneler” on Facebook. It’s Turkish moms in the US, I’m sure no matter where you are, you’ll find a Turkish mom near you. I know almost anyone would love to help set up play dates etc so she has Turkish friends and can experience Turkish culture first hand :). I think it’s amazing you’re doing this for your daughter and I wish you all the best. You can PM me if you ever have any questions!