I expect like mine, your watch needs a service, although this should be done every 2 years i suggest that if it is 3 years or more then a complete overhaul is the only way to go if never serviced.
In the UK this costs £230 + Delivery (£245 total) or $450 ($480) if $US.
Mine at the moment is losing around 15 - 20s a day (you do not state if your loses any time but i suspect like mine yours does too)
I wind mine every 2 days (40 turns).
Don't be fooled by cheaper and inferior services by any other than Breitlin themselves and with a turn around time of 4-6 wks then its not too much of a burden.