back-burner
From Longman Dictionary of Contemporary Englishback-burnerˈback-ˌburner, backburner /ˈbækˌbɜːnə $ -ˌbɜːrnər/ verb [transitive] informal to delay doing something, because it does not need your attention immediately or because it is not as important as other things that you need to do immediately Allison back-burnered her prestigious law career when she had a baby. The project has been backburnered. → leave/put something on the back burner→ See Verb table