id keep cycling it. as a fellow newby to the aquarium world (specifically planted) i cycled my 2.5g for a month. Only really bc I way over dosed ammonia on accident the first time i added it and it leached into the substate and took this long to fully disapate. However now that i stocked it with fish and shrimp all of my levels stay at zero, even nitrates after a week without a water change (need more fish! lol)
But the cycling time gave my plants time to root, some parts died off and grew back even stronger and greener.
IMO its worth the wait for the piece of mind, plus it makes you that much happier to finally have things moving around in the tank once you do actually stock it.