Since the recent update to woodcutting timers, for some reason redwoods were not made to at least match OSRS. I'm not sure why, but there's never a solid reason (in my opinion) why Alora should be made harder than OSRS. I suggest matching the timer posted on the OSRS wiki
Part of the justification of the timers were that players can cut logs much, much faster on Alora than OSRS (it's about 3-4x faster), so it was never going to be harder than OSRS. That being said, the main objective of the timers was for players with levels on the higher end to be able to get a full inventory without the tree depleting, and some trees are just shy of that mark (I was only able to get 22 redwood logs with a dragon axe at 99 woodcutting before depletion), so I'll increase the timer for all trees by 50%, which should allow that for all trees.