Ultimate goal – timeline

Hi, I’ve been a scholar for 9 months and it’s taken this long for me to feel like I’ve found my impossible goal that I want to work on. Is it important to have a timeline or due date or is it better to be more fluid? My impossible goal is to live in another country for 3 months. When I first developed this goal, I had in mind trying to go during the summer but that felt too restrictive and if I didn’t make my departure by this summer I don’t want to ditch the goal.

Any clarification is appreciated.