Leave it alone. Vigorous fermentation may only last for 2-3 days. Bubbles are not a sign that your beer is/is not done. I leave my beer in primary for 3 weeks - no secondary. I don’t shake it or anything like that.
If you are going to use secondary, you still want to just leave it alone for 10-14 days in primary - there is more going on in there than you realize. Yeast are still active. Eating up other things besides just the sugars in the wort.
After 10-14 days you can transfer to secondary if you want, or like I said, lots of people just go with a 2-3 week primary and then keg or bottle.
Couple things that could result in fast primary fermentation though - what yeast were you using and what temp. were you fermenting at?
Higher temps (over 70) and certain yeasts (wheat beers in particular) will have faster ferments.