No -- the panel is fixed frequency.  If you need to run a 60Hz screen, it'll need to be done on an external monitor.  
So My system has a 2060super and intergrated graphics There are alot of settings from NVIDIA I can not adjust as it appears the monitor is hooked into the Intergrated with the 2060 doing the PHYS stuff.  What i really need to know is there a way to limit my display to 60hz?  I have an old game that does not run at higher settings than 60 and my screen is locked at 144. No where does it give me the option to lower to 60 even at lower resolutions. 
Dell G7