Based on reading a ton of dress discussions here on this forum, almost everyone who bought early will see another dress somewhere down the line that they wish they have. Sometimes they suck it up and regret not having that second dress, sometimes they end up buying that second dress and either try to sell off the first one or wear both to make up for their costs lol. If you don't want to be in either scenario, I would wait a bit. Unless that dress is going out of style and the maker will stop taking orders for it, there's no reason not to wait.
I don't think its too early if you love it BUT my advice is because you are buying earlier, do not look at other dresses or try not to lol. I bought mine early and ended up returning because I fell in love with another one so, just something to be mindful of.