Breastfeeding question, FTM

Christine
Hi! I'm a FTM due in June. I want to breastfeed and have signed up for a class through my hospital in a few weeks. I work three days a week in a job that will be difficult to pump during the day, but will be taking 12 weeks maternity leave when the baby is born. Is it possible to pump and store enough breast milk during my maternity leave so that I could let my supply dry (?) when I go back to work and continue feeding baby bottles of breast milk for a few more months? I'd really like to get him to 6 months before switching to formula.