The mod «Smaller Spiders» will reduce the size of all spiders in the world of Minecraft PE (including regular and cave spiders) to a more realistic scale. This makes them harder to defeat, as their hitbox has also been significantly reduced. To balance their abilities, they have been given a new weakness: water.
While the mod enhances realism in the game, it also increases the difficulty of survival in Minecraft PE, as they remain just as aggressive as before.
Spiders continue to be hostile only at night. However, I recommend keeping a bucket of water nearby in MCPE so you can quickly deal with them in case of danger.