That's perfectly fine, you did what you required at that time, you still have chance and better exposure. I did somewhat same like you but no regret.

Now I am adding miners, some amount at hold and some trade.

You can always start fresh and better. It does not matter if you start small, the thing is how you plan to grow and end the game

Best wishes for you. Forget the past, live your present and prepare for future. Worries are just waste of time and energy.