https://minerstat.com/dag-size-calculator
4.547 GB how are you going to use on a graphics card with 3 GB of RAM?
Use your 3gb graphics cards to mine Ethereum Classic de mid next year.
In June 2022, you will be able to repeat the combined mining method 8 GB + 3 GB to slightly extend the possibility of mining on 3 GB video cards.

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Have a look on here. It tells you what you can currently mine with a 3gb card (plus any others), and when the coin dag size will increase.
(although as pointed out already, I don't believe rvn can't be mined with a 3gb card anymore even though the site suggests it can)