About erection

Hi guys ı have a question in my mind that makes me anxious. When I stop hand stimulation during masturbation, my penis goes back to %60 erection from %100 in 40- 50 seconds.I am 24 years old. Isn’t it too early, Is it normal ?

I wouldn’t sweat it. You’re probably just thinking about it too much.

If you couldn’t get an stiffy then I’d be worried.

Mine does that too and I am 23. I think that is just because jerking it isn’t really that exciting, especially when you stop all stimulation.