I feel your pain! Do you think an hour each night is helping at all?
I have tried a type similar to the one you're looking at and it didn't feel sturdy enough and if you toss and turn a lot like me it felt like the pressure being put on the strap from moving around would affect the angle and the tension. I don't know, I was looking at this one as well or something very similar and remembering the ones I've tried that were similarly built and I almost feel like I need one of these: Vive Plantar Fasciitis Night Splint Plus Trigger Point Spike Ball - Soft Leg Brace Support, Orthopedic Sleeping Immobilizer Stretch Boot (Medium: Men's: 5.5 - 8, Women's 7 - 9.5) https://www.amazon.com/dp/B00YZ7CV92/ref=cm_sw_r_cp_api_glt_fabc_10BX6X4QTFBRHEBMM7EQ?_encoding=UTF8&psc=1
Looks uncomfortable as hell but honestly....I think they're all going to be uncomfortable. So if it's gonna suck to wear at least this one might actually work.