There is a difference between set and cured. Something can look finished and still be nowhere near its full strength, and testing it at that stage tells you almost nothing except that it is early. New habits, new friendships and new confidence are all like this: functional quickly, durable only later.

If you started something recently, resist putting full weight on it yet, and resist concluding it is weak because it cannot take that weight. Give it the weeks. Keep it supported meanwhile. Then load it gradually and find out what it actually holds, which is usually more than you would have guessed.