I would feed some parsley and check them this evening. I wouldn't worry until tomorrow morning if they aren't fed.
I had a first time doe who needed a little coaching. I didn't flip her (have never been able to get that to work), instead, I held her over them. I think there is a post somewhere on how to do it. The main thing was holding her back feet so she didn't eviscerate them. The way I did it was much like being caught in an extended yoga pose, which wasn't comfortable, but got the job done. I had babies in a box beside me in easy reach. I sat on the floor with the doe between my legs, facing away from me. I put a towel under my legs but over doe's back feet to keep them as immobile as possible. Holding the doe's front feet in one hand basically meaning I was leaning over her, I used the other hand to slip the kits under her trying to keep her as calm as possible. It took a good 30 minutes of leaning over in that awkward position and it took 3 feedings that way before she decided it was just easier to do it herself. Once she figured out what she was supposed to do, it was smooth sailing and her second litter she did fine all on her own.
I hope she just feeds them and saves you the trouble, but I wouldn't worry just yet.