How likely am I to get seating here on a Sunday around 5 for two? I figured calling a week in advance to reserve a table would be enough time turns out a month in advance they recommend 🙃

It really depends on the day you are going. During holiday season, you should call months ahead. On normal occasions, one month ahead is not exaggerated

As the place is popular, the earlier reservation is recommended.

Call ahead to get a table

Well if you call in advance I guess u would have to find out when u get there.