Breast milk supply

So.... My baby is two months old. She has been getting exclusive breast milk for two months. my concern is lately I find myself getting very busy and finding it hard to find time to pump. Will my milk supply drop? I've been producing around 20 oz a day and so far no drop in supply. I believe the times I use to do it were 12 14 times in a 24 hour span and now that's been cut in half. Should I be worried?