Robina, Yes Ruto has to be thinking of plan B by now. The deadline for 'quitting' Jubilee was basically March 2020 when party elections to replace interim officials didn't happen. Uhuru has been playing cold and hot - I think he conceded to calling Jubilee PG before Corona or Tuju got injured but It's becoming increasingly clear he needs another party now.
The issues are how to 'quit' Jubilee with GEMA onboard and technicalities of not quitting gov or parliamentary system - so I expect to see a lot of stalling and infighting - until 2022.
Uhuru will not dare call for party meetings or elections or anything because he is outnumbered...so basically it will be intrigues at Jubilee HQ, courts and nasty media fights.
The best way to quit Jubilee is to form a bigger coalition - and quit in guise.
Jubilee brand has been dragged through mud by Uhuru fumbling second-term legacy. Ruto should see this as an opportunity to distance himself from Jubilee 2.0 disaster.