Q.Blueberry bushes
I was told I have to prune back my blueberry bushes around every 4 years to keep up healthy bushes and high yields of berries . But I don’t know the first thing about pruning my blueberry bushes . What’s the best way to keep my blueberry bushes healthy and get more berries ?
I have 2 bushes and the one that gets usually more berries than the other bush didn’t grow hardly any berries this year . And the one bush that usually grows less berries has grown so many more this year . I need some advice to keep my blueberry bushes healthy and productive .
Sincerely , Timothy

This article will help you with pruning.
https://www.gardeningknowhow.com/edible/fruits/blueberries/blueberry-plant-pruning.htm