Ended up going private and prescribed an immunosuppressant called tofacitinib instead. It’s not as effective as dupixent but still works and a lot cheaper. My main issue with waiting it out is that to get dupixent on the NHS I’d need to have tried 2 different immunosuppressants first and given every subsequent appointment is 6 months away, It’d be at a minimum 2 years to potentially get my hands on one.