@MadJ364 Thanks for reaching out!
Generally speaking, you can expect a pair of insoles, like your blue Superfeet, to last you about a year. It sounds like you're right at that point now. That could be the reason you're experiencing blisters, although there are many other factors that could be causing that issue (your feet changing shape, your boots breaking in further, etc).
One way to check your insoles is to pull them out of your boots and look at the top of them. If you can see a distinct outline of your foot worn into the footbed, it is likely time for a new pair.
Hopefully this helps!