More posts means more chances, not more guaranteed reach
Since the recommendation system evaluates each video largely on its own early performance, posting more frequently gives more chances for a video to catch on. But a higher volume of weak videos does not reliably outperform a smaller number of strong ones.
A realistic starting cadence
Several videos a week is a common, sustainable starting point for accounts serious about growth, though the exact number matters far less than whether each video is worth watching through. A smaller, consistent volume of real effort outperforms a larger volume rushed out to hit a number.
Watch completion rate as the pace changes
If increasing posting frequency starts dragging down the average completion rate across videos, quality is slipping to hit a volume target. Slow back down and prioritize videos worth finishing.