2020 March, Q1,(d), lifetime expected credit loss

Dear tutor

do we revaluate lifetime expected creidt loss annually or,
is it the same figure for any follwoing year after first year evaluation if the credit losses expectation remaining the same?

From the question, it looks in year 1, we have $10k, I assume it’s proportion of lifetime ECL, then on year 2, lifetime expected credit loss figure recalculated multiply probability.

so in year 3, I assume if the condistion changed, we need to recalculate lifetime ECL again?

many thanks