Like you, I don't know whether it is labeled "homeschool" when your child is under officil school age, but our home has always been a place where learning is not only encouraged, it is embraced and celebrated. When my daughter was born, my mother's girlfriend was showing her how to count to ten on her fingers when Liana was only minutes old! I started reading bedtime stories when Liana was 3 weeks old, and by the time she was 18 months she could "read along" with some of her favourite books. Birthday and Christmas presents were often books, early learning workbooks and educational games and toys. To this day, Liana loves learning (she is now 14) and is able to conceptualise and investigate new ideas, and see things from many different angles. She loves research - which actually annoyed some of her teachers last year, since she researched the ingredients of the latex gloves used in science class and then refused to wear them becasue they contain gelatin! (Liana became a vegan last year)
Now that I had decided that homeschool is happening no matter what, Liana is showing more and more of her old excitement about the possibilities of learning. I found that school, in the past couple of years, had oppressed that.
Starting early is a great way to instill a fascination about learning into children.
Good luck!!