This probably won't give you enough space in the right directions, but you could try removing your insoles. Easy, fast, free.
A good boot technician may have tools to stretch the toe box a little, in length and width - maybe half a size, as that is perhaps the hardest place to stretch.
You can order shoe stretchers yourself, like
these though some might not be strong enough to stretch skates. Cheaper ones are available on eBay by looking for bunion stretcher, or shoe stretcher.
I stretched my toe boxes - but only vertically and in width - by using a ball and ring pliers, which are only designed for spot stretches - so I had to stretch many different spots, over several days. which you see on eBay under "bunion stretcher", as something like a "hoke and ball stretcher".
But based on your skatingforums name, you will keep growing, and will soon need new boots anyway.
BTW, I guess this is completely unrelated, but some coaches find that they should fit boots for standing on inside edges, cuz that is what they do all day. So if you do foot impressions, stand on both feet at once. That will make outside edges and crossovers a little harder to do, but many coaches do it anyway.
Oh. I got it! Keep your feet elevated all day. On your desk.
Hope that helps.