I have a potential client who has 4 years of retroactive bookkeeping for me to do he has to get it done for a lawsuit. It's a lot of money so I don't want to let this go. But he has been telling me he'll be ready for me to start in two weeks...since September. He has not yet signed my contract even though I sent it to him months ago. I'm not sure how to proceed. Any suggestions how to follow-up with him at this point?