Phase jumping in UVM is not recommended. There are issues with respect to shutting down executing processes when you jump between phases and the VIP-TSC (a.k.a. “The UVM Committee”) is seriously considering major changes to this functionality.
Perhaps it would be better for you to explain what you’d like to do and then we can explore a way of doing it without phase jumping. A mix of virtual sequences, barriers and events is most likely sufficient for your needs.