How to change the amount of RAM for the integrated video card?

Question

Video cards

Hello, I have a laptop Acer Aspire 7 A715-41G-R7MZ
Processor Quad-core
AMD Ryzen 5 3550H (2.1 - 3.7 GHz)
Operating system
Without OS
RAM

RAM size
8 GB
Number of RAM slots
2
Type of RAM
DDR4
Storage

drives Storage capacity
512 GB SSD
Video card Video card

memory
4 GB
Video card
NVIDIA GeForce GTX 1650
But the laptop allocates 2 GB of RAM to the integrated video card. How to reduce the amount of RAM for the integrated video card? Just 6 GB is not enough