Love your quilt, how about using the white sashing and bind it with the red and white polka dot fabric

This sounds like an excellent idea. Good luck!

What about blue it will go with the blocks - that might just work - and use the red dots for the sashing -

Red or blue jumped out to me at first.
I'd say "audition" different combinations till you're happy.
Either way, the Mother and baby will be pleased.

IMHO, I would stay away from the white. It is, after all, a baby quilt and if the baby is anything like my granddaughter, the quilt will get dragged around the house, spat up on, peed on, pooped on, and spilled on. Keeping the white white will be impossible. I like the idea of using blue.

My DGD is almost 5 and cuddles up with her BoBo every chance she gets.

You could even make some pinwheels & add them to each corner. I've done that. Turned out cute.

I think the blocks are really cute and I like the idea of the aqua blue

I went this afternoon and bought aqua blue fabric. I love the red and aqua combination. I'm backing it with the yellow chevron/zigzag. What color thread should I use on the blue? If I use white it will really show and my FMQ is scary. I was thinking of not quilting that section or using blue on top and white in the bobbin (if it doesn't show through). Thanks again for everyone's help and encouragement! :)