That’s great news. The bearing won’t really show any specific signs of being broken in besides its performance being better, so yes the spin time with it will be noticably better from when you started. It is possible for it to make a different sound, but that can happen anytime.
I’m sure Samad and some other people can easily get 5 minute sleepers but that is just because they have great form for their throws. Look at André: he barely puts any effort (it seems like) into his throw and it still sleeps for many minutes. Just continue to work on your throw and you will have a great throw in no time, and hopefully then your bearing will be broken in too.