Oil pressure 75-at startup, 2020 Silverado 5.3 V8 then goes down But when accelerating it goes quickly back up

I’m concerned that when get on the highway towing a travel trailer that the increased acceleration will spike the oil pressure and cause some damage. My information is coming from the analog gauge installed on the truck. The engine is a 5.3 V8 ecotec. I was hoping that someone would have knowledge of this issue to see if it’s common. Not borrowing anything but being proactive on a potential problem. This was just a weekend query before I can get to my mechanic. Thanks for the reply.