I'm joining you!
I already cut back my basal and still have to watch real close to prevent going low.
In my case it's my period, which sometimes does this and sometimes doesn't, but this time the effect is more than usual.
Just what I need when I'm about to go sailing for 5 days.

This means more activity so a reduced insulin need, but reducing Tresiba won't make much of a difference this quick. (The basal I've reduced is the Levemir but that one's down to zero now, I only use it to top up my Tresiba if needed.)
The sailing will be work as well, not leisure.
The two of us, skipper and I, will be responsible for the sailing with about 18 adults with learning disabilities and likely two people without disabilities. The weather forecast is awful too. Strong winds, thunder, hail, gusts of up to 38 knots windspeed possible.
So there's absolutely no room for hypos during sailing.