I am a work-from-home mom, but can relate to much of what you shared! I have three little ones, all of whom have not started school yet (with the exception of preschool for my oldest). I definitely don't get much work done during the day, and if I go to yoga classes, they are late in the evening after my husband is home and my kids are in bed. What I've found works for me is to implement a "quiet time" for all of my kids in the afternoon. This is often during the baby's nap. I will send my older two up to their room with books, toys, and sometimes a movie on the iPad. I tell them that they don't have to nap, but they have to be quiet in their room for an hour. I then use this time to squeeze in a yoga practice!