Don’t play catchup bro. I had an LAC plant last year like yours is right now stripped down and ready I decided to top all 8 tops I’d created and it took her atleast a week to show any growth. I flowered her as soon as she started gaining more size on the topped nodes and tbh she didn’t really stretch. Now some are ok with that but I got a short bush rather than half a tree.
Plants can be different an stuff but personally I wouldn’t touch her too much before flowering her as they go through enough adjusting straight to 12/12 let alone trying to repair and grow at the same time. Choice is yours man you could probably get away with an extra few weeks for your extra 2 ft but IME they stretch minimum of double what they are prior to flip so ya could end up with a right juggling act.