Brushing your teeth with baking soda is okay and does help to naturally clean and whiten your teeth.
But avoid brushing your teeth with baking soda too much as in everyday as it can damage your teeth and could remove the natural enamel on your teeth.
I brush my teeth with baking soda 3 times per month and the other times I use regular toothpaste since the regular toothpaste contains fluoride which helps to strengthen teeth while baking soda does not contain fluoride so it's best to use regular toothpaste along with the baking soda paste.