Some excellent views here, I agree with all of them. Goes to show we have some real enthusiasts who geniuinely love this car.
I've found myself in this spot before, but with a 370Z. Having a company car alongside it , the mileage was low and so i was looking for real excitement each time i drove it, which didnt really happen after a while, despite the lovely v6. This platform (86) I often miss driving it if we're using the other car/been on hols which tells me something, both the GT beforehand and now the GR.
A couple of points people have mentioned in particular which really stoke the fire for me: Trackdays, and tyres on the car.
The former , well, jolly good fun and shows you really what the car is capable of (and often, me, the driver is not).
The latter, i was trying to find the limit on the public road in the 370Z, stupid really, but i felt thats where i was trying to get to to enjoy the drive the most. So with the 86's i've since been quite careful about choosing modest tyre sizes and tyre models (LOVED the primacies on the gt86) to provide as good feedback as possible and not over-grip the car - an alignment helps here too. The blasts on a B road feel much more alive this way imo (only tested on private courses, obvs).
I do hope you give it a few months like others have said to try and reconnect with it, i think this ones a real keeper.