Ok so realising that even lengthening 5.5cm makes my tibias look too long as i had long tibias to begin with, now i feel like i should compress back down to 5cm only.

So basically its a 0.5cm compression and it can still be achieved easily as the bones are still soft and im still in frames. My only chance will be to do it before i get the nail which will be after 2 weeks.

Need suggestions. I personally think it would also be better from a functionality perspective as it could help bone regeneration further and relax muscles a little.