Advice from NW Austin dentist Dr. Travis Hammons: Floss BEFORE you brush your teeth.

https://www.healthline.com/health/dental-and-oral-health/floss-before-or-after-brushing#brushing-and-flossing

Thanks to Dr. Travis Hammons of Hammons Family Dental Clinic, this year I have developed a new habit of first flossing my teeth at night time, then brushing my teeth. 

Dr. Hammons is the first-ever dentist I can remember who advised me to floss first, brush next, and I'm very grateful to Dr. Hammons for his great suggestion!