Your swatch was to check your gauge, correct? If so, you would have a smaller/shorter project. What is your project? Many knitters have difficulty acheiving row count. If your stitches across are good, just knit the number of rows you need for the length of project. Most patterns, socks, sweaters, hats etc. say to knit to X inches before shaping. When I first started knitting, many books I read said, “If you are having difficulty acheiving # of rows for swatch, but the stitch count across is correct, don’t worry about the rows, as much as the # of stitches across.” I live by that and everything I have made fits, again because the patterns usually state, knit until piece measures X inches long. You could try a larger needle but, your swatch size will change across accordingly.
I hope this helps.