Analysis: Your subconcious is drawing parallels between when your dad would blow raspberries on your belly and you would laugh as a child, vs when you grew too old for that and just hated the scratchy beard and the invasion of personal space. It stopped being funny long ago.

You dream of a transition because you are at another part of your life that is fundamentally different than the one before, and a major figure in your life, not necessarily your dad, still treats you like the old you, not the current you. You've acknowledged that you have to take control of the situation and get the offending forces in your life to respect who you now are and how you expect to be treated. Could be family, a boss at work. It's not clear who or how, but it is clear you've grown and others haven't kept up.