The best way I see for you to get your calories up without having to eat "real" food is to add flax seed oil to your diet instead of relying on whole foods. Just one tablespoon on flax has 140 calories or so........adding a few of those a day as a fat source can help cut down on the quantity of food you need to eat.

As far as your other questions go regarding your suggested calorie levels Im not really sure.....maybe your body has simply adjusted to such a low calorie level......and Im sure thats why your weight loss has stalled.

If I were you I would cut down on the whole foods and try to hit the targets that the CKD parameter gave you.......Im sure it will kick your metabolism up again.........

I hope this helps, sorry I dont have more concise answers!