Seriously? That’s pretty much the default hollow for hockey skates in this country. Go to a LHS and ask for a sharpening, and you’ll get that or 5/8”, unless they are knowledgeable then they might match it to your weight. I know plenty of people on 3/8”, a few on 7/16” including me, lots on 1/2” and some on 5/8”. I’ve never met someone on shallower than 5/8”.