I never heard about the kosel requirement.
But you seem impatient. First finish, then wait a little more before you decide it’s not working. Sometimes a shidduch starts cooking at the other end and you’re unaware.
Also, dividing hours (between family/friends) to cover all 24 hours so at least someone is abstaining from l”h at all times can be very successful. I don’t remember how long it needs to be done for (ideally, always…). Good luck!