Is 60 epoch enough for training?

[diamondcm]

Hi again,

I changed the target to (x/5, y/5,z/5) for output. And change the dataset to my own. But I got a much slow speed for loss going down. And it might about 120 epoch to get better result. And I am not sure about these two variables to experiment( dataset change and norm change of target). So, just asking experimentally if you have any relevant experience.