I recently lost 65 pounds and it made my shoe size go down a full size. I'm also lighter and finding a lot of things online say that anyone under 60 kg should go for super soft versus soft blades.

Previously, I used Mares Razor Pro fins in 5.5/6.5 (39/40). I'd probably be ok with staying at that stiffness, even with being so much more petite now, but I definitely need a smaller size. Unfortunately, they only go that low in size!

So can anyone recommend something that's comparable but softer/smaller (with smaller being more important than softer)?

I'm also open to upgrading to fiberglass, if it means a better fit. Definitely not up for carbon, though.

ETA: I already use 3.3 dive socks. I'm in the Caribbean and really prefer not to size up any more than that thickness, if possible.