Step 4.
Setting up rules.
If current bars volume is 5 times higher than last 10 bars avg volume AND -%0.5 candle change on 5 mins chart. Thus, it's considered as dump and sell.
In order to calculate and follow this rule 7/24, i'm using an algo trade platform called Traderlands. (It's free)
Generally, you did a good job. Rapidly increasing volumes are indicating that whales are joining the game and some serious price change is about to come. The numbers for the rules would be different for different coins. Coins with lower MC would have a higher volume proportions.
I would say that during the flat market volume analysis should work pretty well.
If you're in crypto, 5mins time frame with an ultra high volume doesn't mean that whales are selling or buying, simply because their marketcap are too low unlike stocks and forex who have a huge marketcap. Personally, 4h time frame and above, with an ultra high volume is considered that whales are the cause.