A month is enough of a rest time at the smaller sizes, but you ought to hang at 0g for about four months. I know it’s hard to wait, but trust me, it will take twice as long if you jump the gun and have to let injured ears heal.
I love organic plugs, but you shouldn’t use them for stretching. They’re porous and are more likely retain bacteria, which is obviously not great when you’ve got freshly stretched lobes. Same goes for silicone.
I recommend visiting BAF’s forum. They’ve pretty much established the ultimate stretching guide and there are a lot of friendly and knowledgeable people. And it’s nice to oogle people’s collections too.