Just my .02
I've rooted plenty of coconuts
The single most common mistake it not realizing the TAP ROOT comes out of one of those eyes and it heads deep down into the soil looking for a water source. So deep containers is the rule. Also I use a plastic bag filled with peat moss dampened so when you squeeze it you can feel the water, one drop falls is good 5 drops is to much . I take that bag keep it in a room that gets up to 88 high and 78 low . It's a wood building I have on my property. Also you might want to get a few more of them because its not at all unusual to have a few that will not germinate . Soaking is OK also .. once you see green it needs light it will grow just fine in 6 hours of daylight but more is better .. You can also plant it in soil in a pot and water it every other day or as needed .. they make darn good potted plants . Everyone who sees it will want one, so have some backups available .. Good luck