When you say, jumping from one field to another, it might actually be a good thing, in the sense that you are still designing your ideal stack. I would say don’t be afraid to experiment. Don’t follow what worked for others word by word, because everyone is unique. You can often play fields and feel if they are suitable for you (at this moment, at this place in time). But always be open for change.
Sometimes we have large stacks while we need small ones.
Sometimes we have small ones while we need large ones.
Sometimes we only need one (in acute cases)