Dramatic drop in Google Rank

Hello! My wife runs a photography business in Grand Rapids, MI and we have just signed a year lease for a new studio for her. Traffic was great she had been busy all year long and then everything slowed way down.

We had worked with someone we found on this subreddit before for 2 months and we had gotten up to the 3rd spot on page 1 for our keywords. She stopped getting inquiries and we discovered she is now mid way through page 2. I have no clue what to do.

Does anyone have any advice?