I will be going back to work in 2 weeks. My lo and I have come along way since his birth in mid feb. We had latching problems, my insecurities led me to bottle feed rather than working on latching, we moved on to the shield, weaned, and have been direct breastfeeding since late march. I do have os and oald. He can gulp 3 oz or so in about 5-10 min. Now that we are prepping for my return to work I worry that the slow flow nipple will cause him more stress and lead to complete refusal. My dh suggested a faster flow because it took ds 40 min to finish the3 oz pumped. The bottles we are using are playtex drop ins. The box says it mimics breastfeeding. Any suggestions?