Girl name too similar?

Je

Won’t find out gender u till my anatomy scan in 4 weeks but we’ve decided on a boys name but if it’s a girl we like the name Gianna and my husband insists on calling her Gia (Gee-uh) for short. I love it also but am concerned it’s to similar to our 2 year old daughter named Mia. (Mee-uh) Any thoughts?