Alla,
I would love to see you get another orchid and share your time between the two. Then perhaps you would stop fussing so much with this one!
It is going to take time to develop a new growth with new roots, maybe months. If you keep this one too wet, you may never get a new growth. Spraying every 4 days with a miticide, makes absolutely no sense in my opinion!
Stop worrying about fertilizer. Without good roots, it cannot absorb it anyway as is shown by your shriveled bulbs.
If you have no viable roots on the bulbs with leaves, you need to remove the leaves (or severely cut them back, not my first choice) as the bulb is trying to keep the leaves alive instead of trying to develop a new growth. It will eventually "give its all" and die without having a new growth to carry on.
It would still help to see a photo.