Just like growing out any length of hair, growing out a hard part is bound to get a bit awkward. There’s not a lot you can do other than bear with it for a few weeks. You can try moving your part slightly higher and using the hair above it to hide the regrowth. Alternatively, getting a shorter style cut on top can lessen the amount of time it takes for both sections to match up again. Lastly, you can use stronger hold hair products to try to smooth the section down and keep it in line with the rest of your style.