I'm going to modify my gym sessions from now on to do low wt/~15 rep sessions on Mondays, med wt/~8-10 rep sets on Wednesdays, and heavier wts/~5-8 rep sets on Fridays. That should (theoretically) help retain/increase musculature while I'm shedding bdy weight/fat. By doing the heavy training on Fridays I'll allow two days for 'recovery', rather than the single day off after the other gym sessions.
Our pool has been refilled but I can't get the pool filter started, so it will need a service call. Once it is working again I'll add in swimming some laps after work on my non-gym, fasting days, and also swim some laps on the weekends.
My long term weight plot shows that I'm now about half-way to my goal (approx. 80 kg and 10% BF). But I've previously lost similar amounts (in 2001 and 2016) only to then stop tracking my eating habits and putting the weight back on again within a year or two. So this time I'll need to make my diet and lifestyle change permanent, so I maintain a healthy weight (and possibly put on a bit more muscle) once I reach my target.