If your domain is of crap quality by all means follow up, if your domain has end users using lessor extensions, or more generic qualities let them come to you.
You will lose a step in the negotiation by running back to kiss their ass so to speak, if they make a lowball, and you say, sorry, and if they have to come back, well then they already know they have to step up their game, otherwise they are just wasting their own time.
If you have a quality name, surely be specific in your reply to their initial, or counter offer, and then put it on ignore until they choose to reach back out to you.