Help! Budgie might have broken leg or be sick!!!?

Hi all,

Im worried about my budgie snowy, he has recently hurt his foot i think because he has been favouring one leg and the other has been hanging down from his perch. He has been all puffed up bent over and has his head down with eyes closed. I heard if a budgie breaks their leg you should take perches out and put soft paper on yhe ground so they get used to walking on both legs. I put one perch back in incase it was hurting him but now hes all hunched down on the ground and once again his leg is sitting out behind him and he is nearly lying on the ground looking very poorly. I plan to take him to the vet if it doesnt get better but vets cant do much with a budgies leg apart from lrt it heal. Is there anything i van do to make him happier or make him better?? Please help i hate seeing him like this :(