Torn Menicus - Weightlifting plans without legs

Unfortunately I tore my meniscus during my Ironman Prep, and the doctor advised me to stop all weighted training for my legs for now untill we know more about how we are going to fix this. This renders both my go-to PPL and Upper/lower splits useless. I still do swimming (3x a week) and some low gear Zwifting (2x a week). I would like to keep going to the gym for 4 times a week. Any advice for a nice weightlifting schedule would be most welcome.

Thank you in advance!