@Injusticehope
Thanks for the photo! This plant looks better than I expected. You've successfully raised it to a good size. Like Rj, I think it will be OK.
The bottom 3 leaves have some brown, dying blotches that look to me like stress reactions. Those leaves will probably die and that's OK.
The paler, more yellow color of the top leaves looks like a need for fertilizer. If the potting mix didn't contain any fertilizer it's time to give it a light dose.
I'm not familiar with Kelloggs. It looks like a composted bark mix. It's holding a lot of moisture. That could also contribute to yellowing by reducing air to the roots. I would let it almost dry out between waterings.
If this kind of vinca gets too dry the first sign will be the leaves starting to roll under at the edges. So, you will get a signal. I've neglected some poor little ones so badly the leaves rolled into tubes! Not recommended, but they did revive.
I'd like to see the leaves looking a richer green before transitioning them to sun. Fertilizer might do that.
This plant is almost big enough to bloom. You'll be rewarded soon.
Pat
