Hi Connelly22
Congratulations on your indefinite PIP award.
Regarding ESA -ESA is an indefinite award, so there is no end date. ESA is commonly reviewed after one, two or three years. Some people have been waiting longer for a review because the DWP has a backlog.
PIP and ESA are separate awards, though some find their reviews happen at similar times.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems