I submitted an LOI to a seller (proprietary deal - no intermediary such as a broker) three weeks ago and have had trouble getting the seller to even start the negotiating process. I have a sense the seller is trying to drum-up other competing offers and I'd like to strike a balance between being persistent and respectful. There is no offer-exploding deadline in the LOI.

I'm wondering what tips folks might have for encouraging or motivating sellers to come to the table and start building momentum to get the LOI signed. Thanks in advance for any advice!