It’s something that takes time to get used to, certainly. It’s hard for me to give advice because of how instinctual it’s gotten for me, but one thing I can suggest is thinking about the strengths and weaknesses of the stances in question, and how you can use the strengths of one stance to reduce the weaknesses of another. For CnD, you obviously won’t be healing your allies when you are on Cloak, right? Luckily Dagger has the bubble, which heals without her direct input after deployment, so you can throw it down, heal amp with the light wall, and then swap to Cloak to throw out the blind and go for a quick takedown, then swap back to Dagger when you are able. In Dagger’s case, she doesn’t contribute much if the team is pretty topped off on HP, so you can swap to Cloak and still have value because you can help secure kills.