OGN had a good pump and now it is cooling down, so right now should not fomo when it kind of looks like breaking out as most can be just small pumps.
OGN will drop more over the coming days and have drawn a buy zone, you could put your buy limit either at the top to be sure it get bought or at the bottom for more, but of course the lower the bigger the chance it might not get triggered. Once it hit the buy zone you would have more coins anyways and when it goes up again you get more gains.