Broke mine (along with capitate) last spring. Was in plaster over 3 months – they said 4 weeks to me at first, then a few months of physio before being able to ride again.
Most of the time spent off the bike once out of plaster was due to the time I was in plaster, not the actual break. Things go rather stiff and weak when they aren’t allowed to move for a long time!
Started back on the road bike first but had to ride with one hand if I saw any rough surface, drains, potholes as the jarring of the bars was so painful.
Oh, and I had 3 or 4 x-rays where they missed the capitate break, was only once I’d paid for an MRI that they noticed it, although it was healed by then anyway.
Good luck, some heal quickly, some don’t. Just keep on top of your sanity if you’re in plaster for a while, didn’t take long for depression to set in without me noticing it.