Of course darling, I’m here for you! You could go through my Tomlincest tag (x) and find whatever you’d like but in short, my personal favorites are
You and I, we aren’t so different by chocolate_shreddies
Time Flies - it’s extremely short but extremely amazing
Maybe This Time series - this is the best fanfiction with baby boy Louis but be careful, it’s age play and daddy kink so be sure you’re into it.
I hope you’ll enjoy it. :)