I'm looking for some advice. I've just started my first jumper (only really done scarfs, blankets and a couple of pairs of booties up till now), and I think it's going to be a bit too small. I did knit a gauge before I started which was also a bit small so I increased the needle size by 1mm. I'm now thinking I should knit the next size up as well, I'd rather the jumper was a bit roomier.
I've done about 12 rows so far in ribbing, is it possible to (easily) add extra stitches to each row so that I'm knitting the jumper for the next size up? Or would I be better starting again since I'm not too far in to the project?