I just scanned quickly back through this entire thread. It appears (unless I missed it) that you haven't had a CC reading over 0.4 for 2 or 3 days now. Is that correct? Was last night the first night that you didn't lose cl overnight? If so, how much cl did you lose overnight the night before?

Did you try the DE powder and the skimmer socks? I think they might really help.
Are you running the pump 24/7?
Before you reply, retest and post another set of chlorine readings and answer the other questions. It may be, depending on your readings and some of the answers you give, that you may be ok to swim this weekend in old suits that you don't care if they fade some. But, I want to see your reply first before I make any suggestions or recommendations.