How can I help break in my new field boots faster/easier?

Well really the best thing is to wear them riding. But your well on your way to getting them broke in. But there is really no substitute to the wear and tear they will get while your riding. You do not want to oil them. Also I would not use to much conditioner, boots and saddles are not the same kind of leather. Go online to a saddle shop i like Saddlers Row and take a look at Urad Leather Conditioner with Applicator. It is under $10 and a little goes a very long way. This one conditioner will take place of leather soap and conditioner. It may just do the trick. But remember NEVER EVER polish the inside of your boots, (where it touches the saddle or horse) with anything other than cleaner, NO boot polish. or your horse, saddle, pads, girth will all be the same color as your boots.