减轻（某人的）负担／压力（等等）
to make a difficult situation or responsibility easier
Getting a new assistant will lighten (= reduce) the workload considerably. 配备一名新助手会极大地减轻工作压力。
If elected, we will lighten the regulatory burden on small businesses.
College fees are high, but scholarships and grants can lighten the burden.
These measures do little to lighten the load of social workers.
If you could take care of the children today, that would help lighten my load.
See also: lighten (MAKE LESS HEAVY)