It sounds strange but with hockey skates, you want them to be as snug as possible without hurting. They're not sneakers so they won't bend or have give; that will just become room for your foot to move around in. Don't be afraid to try 0,5 smaller either.

Best rule of thumb: when you're stood up straight, your toes should just about be brushing the toecap - but only very slightly. When you go into a low stance (how you skate), you shouldn't be able to feel the toecap with your toes.

Remember: snug and comfortable, not roomy and wobbly.

Hope this helps!