Afgan

Hello. I have a used pare of ccm u+ 12 skates, size 10,5 E. They have been used for 5 months and baked/ molded once. When I sit and put them on it feels tight but good, when I stand it is ok also. But after 5 minutes of skating outside of my feet starts to hurt. Then I loose the laces and it helps but the skates start to wobble so you cant skate like that. I realize that my feet get flattened when skating other then sitting or just standing. I have 29,7 cm length, 11 cm width, low/ flat feet, low- middle instep. I have NOT baked them for my feet. Will baking eliminate the problem in the area or not? Do I have to stand in them during the baking process? Or may be these skates are not just for me?