It would appear Jay has been able to snag a coach (Patrick Frandji). Frandji is a former player who has coached Martin, Bedene, Mmoh and has been previous associated with the IMG Academy.
I have never followed Jay all that closely, though I do remember watching him at Surbiton in 2017 or 2018. Somtimes players can reach their peak at a young age. I hope his new coach can give him the extra few percent that he needs to make a breakthru.