Yes, I tried partial but failed because of SI. Full is the only way I'll manage to catch the bus, because you can't turn back after stepping off. It kinda reminds me of when I had gum issues and felt intense pain when brushing my teeth , and couldn't brush them lightly because it would set me off, but when I closed my eyes and aggressively brushed them with a lot of force, I could manage to brush all my teeth through blood and tears (but of course it caused gum reccesion, so I don't recommend this strategy for oral hygiene lmao, but for CTB it's fine)