Is it possible to move a windows install to a different drive and then install Linux on the main drive instead?

It should be possible to clone the current drive to a different drive. First and foremost though, backup any data you care about to a safe place (e.g. an external drive). Data loss is a real possibility. I've been in a professional context explaining to a customer just exactly how fucked they were, because they screwed up in cloning a drive. That wasn't fun for me and it was expensive for them. Don't be that guy.

If you have BitLocker enabled, I'd recommend disabling it. It shouldn't cause problems; but, Microsoft software has a bad habit of giving you the middle finger when you least expect it.

The last time I did something like this, I used Yumi to create a bootable USB drive and selected a CloneZilla ISO. Once booted, you will want to do a device-device operation (WARNING: be very, very certain about the direction you are copying. If you screw that up, you will lose data. You did make a backup, right?) clone the whole disk and not just the partition. You can expand the partition with the actual OS, if you want, but leave any EFI or recovery partitions alone. There may also be a small amount of free space left on the drive (MS does this by default), leave that free.

Once the clone is complete, try booting and using it before you overwrite the old drive.

Second doubt is if I’ll have many issues daily driving Linux if I have an Nvidia card

I'm running an RTX 3080 myself and it's been nearly flawless. That said, my next card (probably years off) is likely to be AMD just to avoid possible NVidia driver issues.