Absolutely! I even use 3 fields at once nowadays, although perhaps the results are slightly less than using 2,but it has its advantages.
I tried 4 fields at once (in the past) and it wasn’t that effective, it was kind of chaotic on my energy.
Usually I stick with 2, good results, maybe 1 field is Peak/Optimal, but tbh I see that 2 fields work quite close to that, so I can go on with 2 at once.
Also, Bonus:
I asked Sammy if listening to any 3 random, unrelated fuelds would still work, and he confirmed that they do work, even if they are completely different fields.
However, @Presmokan, it would be Best to Evaluate how you respond to fields and use them however it’s better or more confortable for you.
I was listening mostly to one field fir a while, then I experimented with more.
Also, Kinetic Quasi Crystal can definitely help, it boosts results and it makes the fields effects remain for a longer time.
If you want, you can search my profile, search for posts created (currently over 7k lol) and just use the search function (only for my comments) and try finding terms like boost, Boosting, etc.
I think I have quite a few posts where I talked about the same topics.
I Wish You Great Results, My Friend.