No. Do not wait 14 days.
You can wait up to 7 days in between treatments but I would not wait seven. I would only wait five.
Treat today.
Treat again in 5 days.
Treat again in five more days.
Five or seven but definitely not any longer than 7 days.
Good job!
Make sure you spray EVERYONE and EVERYTHING again this weekend.
You must retreat at least three times to break the life cycle otherwise you've got to start over.
Mites reproduce quickly.
You can't skimp when trying to get rid of them.
I highly recommend getting a permethrin product and treating everyone at the same time.