And that is why I was using the glass method too so I can see the condition of the roots, which is still an ongoing experiment for me..so I would understand more how the bulb grows. Pretty much at this point, all you can do is wait, till it makes a new leaf growth. A new leaf signifies it has made a new root.
Since it is in soil now, just keep it moderately moist. If you are keeping this indoors, I would use a toothpick or bamboo skewer to check the soil, if it pulls out damp, don't water, or put a big rock beside the bulb, so when you water and then check later once you remove rock, if soil below rock is moist, don't water. Don't keep it too wet, to protect the bulb and to avoid inviting gnats there.
Typically at this stage, after the bloom period, the bulb will just finish off the bloomstalk, then it will rest a bit then start making roots and leaves, if it has not started it at blooming time. And most of the leaf making and return of nutrients and energy goes to the bulb all the way to summer time. So most who grow the bulb in soil with containers will bring out the bulb outdoors, either to be planted inground or kept in the same soil container, so it can get all the sun it can get, it is a tropical bulb, so it enjoys that. Outdoors, it is easier to water, since there are a lot of drying effects there, wind and heat, and lots of light which the plant loves to grow more. On the good side, now that you have it in soil and when the leaves start forming, you can more easily add the fertilizer after watering since your container has a drain hole.
Again..much, much patience...the next blooming time will be in Spring 2016 or if you are lucky to force them again before winter of Dec 2015 to Jan 2016.