My first though is that you may not have the correct size skate. You don't want any negative space in the boot which can be uncomfortable until you break them in even if you have them baked. When I bought my first pair of skates I walked into a big box store, grabbed a pair that where the same size as my shoe and thought that feels close enough. If you are like me, you have the wrong size skate to play hockey. Once I finally went to a dedicated hockey store and got a pair that fit, my foot felt rock solid in the boot. I still had a long road ahead of me to build up the strength in my ankles so I didn't feel like I was flopping all over the place. If you get another pair of skates, you can tell whomever is working with you that you would like a more supportive skate and they should be able to point you in the right direction.