Part of my therapy when I was sitting out was a stretching boot. My doc didn't say to sleep in it, but he did say to wear it for a half hour a day. This definitely helped while I was resting. I have one of these. I stopped using it. Maybe I should start again and use it for longer.
Something like this
BraceAbility Sleeping Stretch Boot - Plantar Fasciitis Night Foot Splint Adjustable Achilles Tendonitis Brace for Fascia, Tendon and Calf Stretching, Heel and Bone Spur, Arch Pain Treatment (Medium) https://www.amazon.com/dp/B01GSEP876/ref=cm_sw_r_cp_api_glt_i_KHBTGQPZ93GNB84YKY5H?_encoding=UTF8&psc=1