I'm sure you can wade through the regulations as well as we all can, but I did the majority of my recent FI course via Zoom, and yes a significant amount by self study. It's certainly doable, was documented, and the CAA were fine with it.
Subsequently I've been delivering PPL exercises briefings on Zoom as well in the evenings or on bad weather days, to get the most out of time at the airfield when the weather's good.
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