I already bought for mid October.

I was going to say set alerts. I use Google and Hopper

Orlando is usually pretty easy to get cheap flights.
If southwest, book as soon as they are open. If anther airline, 4 months or so seems to be the sweet spot

I would just keep checking - I just bought a flight for April - price dropped to $237

Set some alerts on the Hopper app and it will recommend the best time to buy (predict if it will get cheaper/more $$)

We hope to go mid-June or mid-July to visit our niece who is doing an internship at Disney. I always thought booking way out was the best way to get cheap flights, but boy was I wrong!

When will they be cheapest?