The food does not need to be level with the top of the food bowl at all. Budgies can easily lean down into the bowl to eat.
Additionally, if you change the paper on top of the bottom grate both morning and evening, you can easily spread the ration of seed on the paper in the cage to allow the birds to forage.
Starting over from the beginning with your taming will not be a problem at all.
To bond with your birds, you need to build their trust in you.
They will have to learn over time that you will not hurt them.
To build your birdsí trust, sit by their cage and read, talk or sing quietly to them for a period of at least 10-15 minutes, 3 or 4 times day. After about a week, rest your hand on the outside of the cage when you talk to them so they will learn that your hand is safe and will not hurt them.
After a week of resting your hand on the outside of the cage, rest your hand inside the cage when you talk.
Donít make sudden moves, donít try to touch them.
Let their get used to the idea that the hand is now in their safe place and not harming them.
After 2 weeks, begin moving your hand slowly toward your bird. If they become agitated, stop moving your hand and just hold very still until they calm down. When they are comfortable with your hand near them, you can offer them a bit of millet or a few seeds.
Always work at your birdsí pace.
Move slowly and talk reassuringly and calmly to their whenever you interact with them.