Hi there, I also have a bunion and needed to do some major stretching before I could comfortably wear them, and in the case of my pigalle 120s, put them on.
What kind of shoes do you have? I find that these tricks work best with single-soled shoes, but I have stretched platforms this way too.
This is how I do it: blast the interior with a hairdryer so it's hot and the leather becomes more pliable, and shove those socks in until they cool down and leave them for a day. Really cram those suckers in. Then, blast the interior area you want to stretch again with the hair dryer, put some vaseline on your foot in the areas the shoes rub, and try to get your foot in. The leather stretches and conforms to your feet as it cools down, and the vaseline softens the leather and helps your feet slip in. Just be careful it doesn't get on the outside of the shoe if it's fabric. Then wear as long as possible around the house and repeat as often as you need to until the shoes feel right. Store them with socks or tissue paper in them too.
Shoving socks in works, but the hairdryer trick with vaseline (or some other type of similar ointment) works like a charm and is much faster than stretching with just socks stored in them.
Hope that helps!