Locked in Mortgage Rate, but now the rate is lower. Question.

I locked my mortgage rate for a 30-year fixed mortgage, but now the
rates moved lower.
I can get 0.25% lower rate right now (locked in at 6.25, I can get 6.00
right now).

My closing is scheduled for Tuesday or the week in January when on
Thursday my lock expires (2 days before expiration).

Can someone recommend what I should do? Should I re-schedule my closing
to happen on Friday when I will likely get the prevailing rate since my
lock expires on Thursday?

Thanks.