I'm not so sure she is working on something else. I genuinely think her mental health has taken a battering (over the whole nine years to be honest), and I actually think she genuinely wishes to have a very long break from the industry and pressures.
Also, they'll split before we get half-way into 2021.
Again though, I find it interesting that she refers specifically to the band as being the pressure and taking the toll, not the industry.I would have thought so.
In terms of a solo career for Jesy I am really not sure it is a good idea if her mental health is flailing. In the band she had the support of the other 3, so I would have thought trying to get a solo career off the ground coupled with massive press intrusion would be crippling for her.
Again though, I find it interesting that she refers specifically to the band as being the pressure and taking the toll, not the industry.
Not that I'm saying that going solo is the right thing for her mental health, but I do think that is quite pointed.
A few Ella Henderson style feature vocals would seem a way of keeping it reasonably light, rather than a launch straight into a solo career.