Weaner pigs should be growing at around 300g per day, for a 60-80kg bodyweight at six months (if you’re having them home-killed).
Worm your pigs. Talk to your vet about an injectable wormer. For one or two pigs, they should be able to draw off syringes with the right amount so you don’t have to buy a large bottle.
If you want your weaners home killed for Christmas, book in with your butcher now. Check the withholding period of worming product to make sure these don’t interfere with your timing.
Pigs should have good shelter and shade to protect them on hot days, and ideally a deep, wet wallow. Wet mud helps pigs regulate their temperature.