Petition mentions 90 days for the Senate to DO THEIR JOB (signing the petition requires a valid email and you have to activate to have your signature count):
https://petitions.whitehouse.gov//petition/inform-senate-the ... upreme-court
It is a totally reasonable petition. The Senate may or may not provide their advice and consent in the meantime. This is meant to avoid having the nomination drag on forever, as the Republican dominated senate has done with so many court and regulatory nominees (there are still unfilled vacancies).
Andy Schmookler made this legal argument here: