Lets say you have 3 btc of a coin bought at 1000 sats, the coin eventually goes to 2000 sats but has a volume of 0.5, how can you sell all of your coins without dumping?
Like someone suggested microselling might do. Its just like bitcoin. Say someone has 30K coins, he cannot just dump the coins, as after dumping the price would drop to less than 200 after 10-15K coins.
So they usually keep selling small amounts everyday. Since new orders come up, he can continue to sell them everyday.
You could also look for other exchanges having the coin and sell it there.