Happy to have finished.
Having contracted yet another lung infection really quickly after the flu earlier this week, I had recovered enough to do a quick hard hour yesterday to test whether my lungs would hold without an asthma attack.
One hour isn’t much of test so I did some speed-work to stress the breathing and my breathing held.

Enough to decide to give the swim a shot.
I did get an asthma attack the previous  night but the new asthma steroids I’ve been on for the past 8 weeks seem to be doing the job as my Peak Flow Meter Measurements didn’t drop more than 10% from my normal (which is about another 10% below “normal” anyway).

Will write more about preparation and the event itself anon.