New growth vs breakage

How can you tell the difference between new growth vs breakage? I have always had fine wavy hair that doesn't get much longer than it is now and I'm really wanting to grow it longer. I've adopted several new habits (gentle gentle brushing, protective styles overnight, fewer ponytails, higher quality shampoo/conditioner, leave in/hair oil, vitamins, etc) and I'm trying to determine is this is new growth catching up or if it's breaking.. thoughts? Advice?

How can you tell the difference between new growth vs breakage? I have always had fine wavy hair that doesn't get much longer than it is now and I'm really wanting to grow it longer. I've adopted several new habits (gentle gentle brushing, protective styles overnight, fewer ponytails, higher quality shampoo/conditioner, leave in/hair oil, vitamins, etc) and I'm trying to determine is this is new growth catching up or if it's breaking.. thoughts? Advice?