Yeah that book is 180 I read the whole thing like 15 times many years ago. I used the Cambridge series in school which was also 180 but I think more geared to kids. They fuck you in book 4 or whatever though when they throw you into real Latin and it’s nothing like the fake easy Latin they’ve been feeding you the whole time.
I’m sure if I got back into Familia Romana it would come back to me but my brain is cooked now compared to when I was young.