I wasn't attacking you at any time. I apologize for whatever words or phrases I used which caused you to interpret my words in that manner. It was not what I intended at all.
Nor was I saying you were neglecting him because you can't give him his own room. That was one suggestion. I made several others, such as giving him a larger tank with more things in it so he has more to do while he's in there and doesn't feel the need to claw so much. I also asked what the climate and weather is like in your area and suggested making him an outdoor enclosure if the climate and weather are appropriate which he could spend some time in at least part of the year.
Obviously you are giving him attention and doing your best to take care of him. However, if he were happy, then he wouldn't be clawing to the point of destroying his toenails. That's just a fact and I'm NOT attacking you in pointing it out! I am trying to give you several possible ways to help him stop doing that to himself, but what I was trying to say is that if you can't find ANYTHING that works, and he's STILL ripping himself apart after you've tried all of my suggestions which are possible for you, PLUS those which any other members of this forum may come along and offer, THEN you might be forced to consider whether this particular dragon requires more attention and out-of-cage time then you are realistically able to supply at this time in your life. That is ALL I was trying to say.
Like I said in my last post, quote, "Good luck with this! This is a VERY sad situation to be in. I would hate to be in your shoes right now. I'd feel like I was being forced to pick between my three human kids and my lizard kid. But in the end you have to do what's best for everyone involved... the lizard, the kids, and you. Don't make a snap decision -- think about it for a while, and definitely wait and see what other people here have to say because I'm definitely not the absolute authority on this stuff."
Once again, I am sorry you feel attacked, and that was not my intention... but you would do well not to reject information you don't want to hear by perceiving it as someone attacking you and belittling you. That is not what is happening here.
EDIT: I thought of another couple of ideas. Are the tiles in his cage permanently set in? If not, you could try removing them altogether and switching to a softer substrate such as newspaper or paper towels or reptile carpet. If he doesn't already have one (and I'm guessing he doesn't because he's digging at the tile, but I could of course be wrong) you might try supplying him with a digging area. I've read that the safest thing to do is to take a plastic container like a Tupperware dish large enough for him to fit in and fill it with something like alfalfa pellets (not sand or anything that could cause impaction!) If he really, really wants to dig, he can do so in there as much as he likes without hurting himself.
Oh! And just as I was typing another possibility occurred to me. Are you CERTAIN of this lizard's sex? Could it possibly be female and gravid with an infertile clutch? Even if they have never been exposed to a male or any other lizards females sometimes can become pregnant with infertile eggs and then need to lay them. Obsessive digging is one of the signs. I wish I had thought of this sooner because this may be the answer to your problem if you aren't 100% sure he's a boy.
Finally, as far as healing his (or her?) toes are concerned, the reason I'm focusing on getting him to stop scratching is because no healing can take place until the damage stops being done. That's just unavoidable, unfortunately. But you can at least help by
bathing him as often as realistically possible with a solution of Pedialyte in the water... I forget exactly how much to use, someone with more experience help me out here? In the Beardie ER and Health forums there are several threads about beardies who are injured -- many of the suggestions in those threads involving soaking and topical ointments and remedies would likely be relevant to your dragon's feet.
Believe me, I understand why you don't want to give your dragon up. That should definitely be the absolute last option you consider. I was just trying to point out that, at some point, it might have to be considered. But for now there's still a WHOLE lot more you can try before you even have to think about that.