Yep, July and August are usually slower (I guess this is what’s meant by the dog days of summer?)
I seen slow months for at least the past 3-4 years* but this summer has been extremely slow.
The lull appears to be seasonal; people go on vacation and don’t think about personal training a lot.
See how things are in the fall.
Hope it works out!
*I’ve been a trainer for over 10 years