So, some of that he can't use. Andoran seems to go easier on you if you're pathetic, like a desperate mother or slave or halfling. He can't exactly turn himself into a halfling or whatever.
Some of it seems... kind of obvious? Like of course you shouldn't be an idiot and pray to Urgathoa for a removal of or protection from disease... maybe she can target other people instead of you but praying for that is obviously Evil! And punishing someone for cheating people in business dealings is what a sensibly lawful (i.e. not Cheliax) should and would do.
Andoran goes easier on you if you can show repentance. That fits with what he has heard third hand. Fernando can't exactly summon up feelings of repentance, but he can conjure up a little doubt about most of his life decisions with only a little bit of introspection, and with the right framing that is kind of like repentance? He hasn't heard of the framing "lack of virtue" before, but he can kind of guess and with a few weeks to learn Good theology he could probably get it right. He can practice right now... torturing Asmodean priests into breaking oaths... is a lack of solemnness, because it is really really funny? No wait, it's a lack of mercy... except Good is allowed to kill Evil, that seems kind of worse than torture? He can probably just ask at some point on the exact dividing lines.
But the more important question is a bit bigger in scope. There is no point in betraying Baphomet (for real, and not just enough to pass a truth spell) if he's ultimately bound for the Abyss anyway.
"Do any of you know how long it takes someone to make Neutral from Evil? Or like, if it varies, if you have a ratio in tortured Asmodean priests to years of giving all you can afford to poor and living in solemn self abnegation or whatever the maximally Good earning way is? Just a very loose estimate would help. And if you could also make an estimate of years of freeing slaves via piracy for someone that just made Neutral to eventually make Good?"
Hopefully the last part isn't just propaganda against Andoran and that really is the national past time? He wouldn't want to risk it while he's still Evil himself, but it seems like a reasonable way to improve the Maelstrom to Elysium and if he dies then the Maelstrom should be tolerable.