Mate. You don’t need advice. You know precisely what to do. Complete honesty. She shouldn’t judge you based on your income. She may do a bit, because I realise we all do that a bit - don’t worry, I wasn’t born yesterday - but the alternative is to tell an untruth and deceive her accordingly. That isn’t just wrong, but it just becomes a burden for you and that you do not need.
So that may be unhelpful because it doesn’t make life easier for you, but you know I’m right. Good luck, you’re more of a man than you were a few months ago, so you will do it right. Cheers GBS