It won't hurt the battery, but you may notice some inaccuracies. I've done batteries before I can recalibrate it and then waited until I can wait for the phone to die on a day off or I can swap devices (either with my 2nd number on the Pixel 7, or the SIM card goes in the Pixel 7 and I run both numbers) so I can let it drain while I go out and do what I need to.
It's not ideal, but you'll make it. Just let the phone die if at all possible.