How did Digambar Jain Muni in 4th kaal who went alone to सुनसान forest for months for tapasya get water in kamandal for that time period ? Did muni THINK that Shravak will provide him water there ? Because fasting is possible but stopping excretion is not & muni have to take filtered water only.
Also, since muni cannot walk without पिच्छी, there might be many munis in सुनसान forest whose पिच्छी might have been taken by animals / blown by wind and they would have taken sallekhana for want of (lack of) picchi ? I have never heard of such instances in agams.
I was just contemplating on 4th kaal and I know the above questions are based on less understanding of mine.