Volume and candle

In an ongoing uptrend,I found a small candle it volume is incredibly increasing compare to last two candles.But the thing that I can’t understand is it’s volume increasing but it’s size doesn’t increasing…Atlast after completion of its time frame that candle shaped like a spinning top(looks like grave stone doji)…then the downtrend began to start…

So what we want to understand if volume increasing but candle not increase its body?

Some Candlestick patterns have been discussed on Varsity, you can read it to know more.