I'de say it's too late to "properly" cure them, yes.

If you fear mold will start to grow do NOT, and I repeat, do NOT mist your bud in the jar. That WILL cause mold to grow fast, without question. And the worst part is you won't see it coming.

Putting an orange peel in each jar would be your best bet at this point. Just keep an eye on it. If you see the orange peel starting to dry up or become deformed, remove it and put another one in there. This will help add a LITTLE humidity to the jar which will gradually increase the moisture in the buds and leaves.

The best way to ensure you don't get mold is to keep the jars in a cool dark area.

When you do properly hang them and are ready to "properly" cure your buds, I swear by the refrigerator method. It almost always works out perfectly! Just make sure the temp settings are not too cold, place your jar/s in the fruits/vegetable compartments. Only remove the cannabis from the fridge when you are ready to smoke it. Meaning, only take out what you're going to smoke for that day, or week, which ever you prefer...

This also increases the moisture in the buds dramatically. What happens is basic science, when you remove them from the fridge to smoke it, it will warm up and moisture will form on it a little and the buds will absorb it. You won't notice it visually, but you can feel it and taste it. If you could wiegh it, it adds wieght too and it really makes a BIG difference in how the bud smokes. (I did it)

So, basic rule of thumb - To avoid mold, keep jars in COOL dark places. Not FREEZING, but nice and cool.

When you hang them, you shouldn't allow the leaves to become crispy to the point where they crumble when touched. The humidity was very low too. With relative humidity levels of 40% you should've only hung them for at the most 5 days, then put them in jars. So remember, lower humidity, less days hanging. Now even when the humidity is high, you don't want to leave them hanging for more than 7-8 days, it's pointless.

So, basic rule of thumb - Watch the humidity. Anything under 50% relative should be hung to dry no more than 5 days. Anything over 50% relative should have at least 7 days but no more than 8...

This is what I found to work out best for me through my experience. Hope this helps.

Goodluck man!

Got any pictures of your grow?