I just jot a job that I can grow my hairlong. The last few trims while still in the old job I had them cut more in the back and leave the front a little longer so I could gel it back and no one would really know how long it was. Now the front is two or three inches longer than the back. I plan on just letting it grow but should I even it out first.
Considering that the hair in the back is already further down your head, the hair on top has to be longer to go down the same lenght.
So, my recommendation is just to leave it as is, for now.
I say leave it alone too. If you cut the front back, you'll end up wishing it was longer when (if) you try to put it back in a ponytail.