When can I stop being concerned about nitrate levels in my baby's food?

I have been following the American Academy of Pediatric's recommendation and have avoided giving my daughter home cooked carrots and spinach for fear of exposing her to high levels of nitrates. To my understanding, the nitrate levels of these foods are lower in commercial baby food jars because baby food companies are required to monitor nitrate levels in their vegetables. But now my daughter is almost ten months old and I would like to make her a batch of beef stew with carrots to freeze and serve again in the future. Do you think it is okay to start doing this now that she is older?