I've read that they'll go down because fuel $ is going down and the summer rush will be over. As far as when to buy the tickets over the next 2 months, don't think anyone can predict that.
Don't forget that airlines will allow you to cancel within 24 hours (and get a credit), some more because of Covid stuff. There are also airlines that gives some sort of price guarantee for a short period of time. See below for your airline
Airlines that offer you a credit if the price of airfare drops