Your problem here is not so much literal interpretation, but all the extra traditions literalists add in that the bible doesn't say.
Really now?! The Bible in Exodus 20:11 says God created the Earth and
all that was in it in 6 days. The problem with an old Earth hypothesis is not Genesis, it's Exodus. When God wrote it with His own finger in stone on Mt. Sinai.
Six days.
We could look at the way Moses interpreted the days in Genesis as a lesson teaching Sabbath observance, but remember, we were talking about death before the fall. That is what I was referring to when I spoke of "Your problem
here ..."
And the Bible declares that "the wages for sin is death".
So why do animals die then since they cannot sin and do nothing to earn the wages of death? Were the Ephesians physically dead before they became Christians?
You were dead in your transgressions and sins Eph 2:1 NET. Paul said he died when he first sinned Rom 7:9
And I was once alive apart from the law, but with the coming of the commandment sin became alive 10 and I died. Sounds like the wages of sin here too. Paul sinned and he died. But he was still alive physically years later when he wrote the letter.
So how can you have death before the fall? The Holy Spirit also says in Romans 5:12 that death entered the world because of the sin of Adam:
"Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:"
Animals do not sin, sin never entered the world until Eve and through Adam it passes to all men. Likewise, there was no curse on creation before the fall.
If animals cannot sin you have the same problem here as you have with the wage of sin verse. First look at who this death spread to.
Rom 5:12 ESV
Therefore, just as sin came into the world through one man, and death through sin, and so death spread to all men because all sinned. Paul is talking about death spreading to all men because of sin, not animals, all men. So why do animals die? The bible doesn't say their death was the result of the fall, so there is no reason to think they didn't die before the fall. Then have a look at
why death spread to all men
and so death spread to all men because all sinned. If this death Paul is talking about spread to all men because they sinned, how was it able to spread to animals who don't sin?
Sorry, that's not "extra traditions", that's a literal reading of the Biblical text.
I pointed you to a list of these traditions in my last post.
That animals were created immortal.
Animal death was the result of the fall.
Adam was created immortal.
That it is physical death that came the fall even though in the story Adam quite clearly didn't did physically the day he died.
Especially Exodus chapter 20:11.
Have a read of the other list of the ten commandments in Deuteronomy 5, and look at the Sabbath command. Here te illustration of the Sabbath command is not the days of creation, but the Exodus from Egypt
Deut 5:12
"'Observe the Sabbath day, to keep it holy, as the LORD your God commanded you.
13 Six days you shall labor and do all your work,
14 but the seventh day is a Sabbath to the LORD your God. On it you shall not do any work, you or your son or your daughter or your male servant or your female servant, or your ox or your donkey or any of your livestock, or the sojourner who is within your gates, that your male servant and your female servant may rest as well as you.
15 You shall remember that you were a slave in the land of Egypt, and the LORD your God brought you out from there with a mighty hand and an outstretched arm. Therefore the LORD your God commanded you to keep the Sabbath day.
The question is, is this a literal description of the Exodus or is the Lord's 'mighty hand and outstretched arm' a metaphorical description of God freeing them from Egypt? And if Moses can us a metaphorical description of the Exodus to illustrate the Sabbath command, couldn't he also use a metaphorical description of the creation?
Who's "wristwatch" was keeping time? God's or Adam's? Seems to me a thousand years as is one day and a day is as a thousand years to the Lord. I don't think the Holy Spirit includes these literary devices to flavor, I believe every jot and tittle is inspired, everything is there by deliberate design.
Adam lived to be 930, he died in 1 day as far as God was concerned.
So you don't interpret the days in Genesis literally?

I love Genesis 2:17, because literalists either have to interpret death spiritually or have a non literal interpretation of 'day'.