LET UP ON (1)

let up on (somebody) = be less strict with (somebody)

examples:

• I will not let up on you until your grades imrove, young man.
• You put too much pressure on Tony and he 's only twelve. Let up on him.
• Your daughter got three straight As for her school projects and just one B and you 're not satisfied with her work? Let up on the girl!
• My wife says I 'm too strict with our kids. Maybe I should really let up on them a bit.
• No, I will not let up on him! He promised he would wash the car and he didn 't. That is not very responsible of him.