First, IMO - Move the listening seat forward & back a bit and note the differences.
You will find a position where the peak is less problematic, although other peaks or dips are likely to appear.
If you are measuring, be sure to do all measurements at ear height, so that you seeing the room-height interaction as well as possible, otherwise the measurements won't exactly tell you what is happening.
Choose the seating position where the room interacts least in the bass - in other words, where the bass is smoothest.
This is nearly always the most important (not to mention inexpensive) first step - definitely done before moving the speakers to fine tune.
In fact, without first establishing this 'smoothest bass' listening position (which becomes the anchor point), moving the speakers about is much less useful.