Follow up with a useful next step.
ServiceKeel field guide

[ ] Check that the estimate still needs a response.
[ ] Read existing replies or customer requests.
[ ] Choose a suitable delay.
[ ] Identify the estimate and requested work.
[ ] Ask one clear question.
[ ] Check the recipient and message.
[ ] Define when follow-up should stop.

Adapt this checklist to your work.
https://servicekeel.com/resources