I don't have any experience with pots

but with standard & Kune Kune pigs I feed a little more around the time of service (2 weeks before & after) keep the feeding just as normal until about 4 weeks before the due date when I increase it a bit more. I don't feed grain though, I'd suggest you try to get either standard pig nuts or if you can source them, pot bellied pig nuts - they will have the correct protien, vitamin & minerals needed as grain (especially barley) makes Kunes overfat and I'd imagine it would be similar with pots.
Actual amounts are hard to give because I don't know what pots normally have

My Kune Kune sow normally gets about 1lb of hard feed and lots of grass, fruit & veg (or hayledge in the winter)
We feed 2lbs a day around service/conception and in the last 4 weeks increase her to around 3lbs - this is always cut back a bit as soon as we suspect farrowing is only a couple of days away (it seems to help prevent constipation post birth with her). Once she farrows we gradually increase her to 3lbs for her and a quarter pound for each piglet, going up to half a pound per piglet by the time they are 2 weeks old and stick to that pretty much* until weaning.
* if she's getting too thin or fat or constipated etc we adjust food intake as needed.
My Kune isn't overweight though, if your pig is overweight it's important to try and trim her down a bit especially before she farrows as that can sometimes cause problems with the birth and afterwards (higher risk of squished piglets)
The piglets do most of their growing in the last 4 weeks, so this is the time to make sure she is getting proper feed, but until then I'd put her on a diet - cruel to be kind

Hope that helps,
Karen
