you need to dig a bridge above yourself like in the screenshot so that regular prawfins fall into the hole and don't interfere, but be careful and don't fall into the hole yourself (this place will also be convenient in further battles with bosses)
you will also need a ranged weapon (in the video I used armor and weapons that cannot be crafted before passing this boss, but you can pass it with the weapons and armor available at that time)4.1 the boss makes a dash towards the player, it is enough to jump to dodge
4.2 the boss sits on the ground and spawns regular praffins, damage from ranged weapons stops being dealt

we go to the same place where we fought with the first boss and place beds so that if the worm has engulfed you around itself there is a chance to get out, and by this time I also recommend crafting true zeus staff
regular
white, which does not receive damage from melee weapons
the boss will just chase you the whole fight

and the third battle is again on our previously made field, only now build walls of blocks on the sides, since the boss will change gravity and you can simply fly out of the battlefield (the wall can be made higher)
phase1:
4.1 the attack consists of shooting fireballs, you can hide underground or dodge
damage- 38
4.2 this attack shoots out homing blue fireballs, you can also hide underground or dodge
damage- 42
4.3 the third and last attack in the first phase of the boss is a laser from him we also hide underground
damage- 52
phase2 the attacks remain the same except for the exceptions I will describe below:
4.4 now there is not one laser but two, we also hide underground
damage- 52
4.5 the boss changes gravity (that's why we built walls on the sides)

for passing the boss you get an achievement:
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3558173314