Developing ILFORD XP2 SUPER (ISO 400) with IILFOSOL 3

Hi everyone,

Tomorrow will be my first time in the darkroom, and I’m planning to develop a roll of Ilford XP2 ISO400. I realise this is typically a C-41 process film, but I have access to my university’s B&W chemistry and I'm keen to experiment with cross-processing it in black and white developer.

Has anyone here done this recently who could share their notes on temperature and development times with ILFOSOL 3? I’ve seen mixed data online, most commonly a 1:9 dilution for 21 minutes, but I want to ensure I’m on the right track regarding temperature (assuming 20°C/68°F?) before I commit.

Any insights or experiences would be greatly appreciated. Thanks!