settle down

verb3

1. •
   To make or become quiet and calm after a period of disturbance or restlessness.

   • It took John a while to settle down after the phone call.
2. •
   To establish a settled lifestyle for oneself, especially by marrying.
3. •
   To grow comfortable and familiar with one's new accommodation or circumstances.

   • I have not yet settled down in my new apartment.