Changing the title of your gig will affect your gig's impressions, performance, and visibility. Changing your title is a good idea if your gig is not performing well, but keep in mind that after changing the title of your gig, your gig impressions will decrease for a few days. After a week or two, you can assess whether changing your title has increased your gig impressions and performance.
I advise you to change the title, wait a few days, and if the impressions aren't good, try changing it again until you are satisfied with the results.
Please keep in mind that changing the description and FAQs will affect your gig's performance in similar ways. Therefore, you might want to update them along with your title.
Additionally, it's advisable to space out your edits by a few days. Editing your gig too frequently is not recommended.