Yes it's okay to drink maple syrup as long as you don't drink too much of the maple syrup at a time.
Too much maple syrup when drank may cause stomach issues, diarrhea etc.
Also you could gain weight by drinking too much maple syrup and increase your blood sugar levels.
Some people will put some maple syrup into a cup and drink a cup of maple syrup along with their other breakfast.
I do the same sometimes myself such as when I'm having pancakes and toast and sausage links.
I dip the toast and sausage into the cup of maple syrup and then drink the rest of the maple syrup.
Maple syrup is healthy for you though in moderation but just don't overdo it.