So in every other versions of Resident Evil 4, whenever your inventory is full, you're still able to pick up a new item as it'll automatically bring up your inventory, with said item on the tray to the right. That way you're able to either rearrange or mix some herbs together

For some reason, this feature was removed from the VR version. It's pretty frustrating having to discard something because you're trying to pick up some herb that you could simply mix with the other herbs you already have

If the devs were worried about it breaking the immersion... I'll just say that if this was real life, you would definitely just pick it up and take the time to shuffle your stuff around. It wouldn't be surrealistic or weird