Lite- sorry it was a bfn
My FS knew of my immune protocol but was not necessarily supportive of it. He didn't think it'd work and even when I got my bfp refused to admit immune meds may have helped. Dr M told me let him take care of immune issues and FS takes care of the ivf protocol side.
As for weaning off the pred you need to do it slowly one you've been on it for 7+ days as it completely takes over the functioning of your adrenal gland. I stepped down 5 mg/wk with a bfp but I've read with a bfn you can step down faster by 5mg every 3 days. So if on 25, go to 20 for 3 days then 15 for 3 days and so on. Might be worth a call or email to Gwyneth to double check, or ask gp.
Take care xx