Refused flexible working and reasonable adjustments

I have requested flexible working and reasonable adjustments under the Equality Act due to extreme GAD.
I’ve worked for my employer for over 5 years, the last two in a London based role, working mainly from home in the North West, with regular monthly visits to the office.

My employer recently introduced a new hybrid working policy stating two days a week in the London office is now compulsory. Living over 200 miles away makes this impossible for me.

over the past six months, the stress of the situation has severely exacerbated by GAD symptoms. I tried to do the two days a week but the costs have put me at a detriment financially and this, coupled with the worry of losing my job and exhaustion from all of the travel, has meant I’m now off sick.

My appeal has been refused. (I requested to continue my two days monthly London office visits, plus extra for training and urgent meetings, and to work from our local office two days a week instead).

They have offered me my old job back, (at a lower pay grade with less favourable working conditions), so basically a demotion, and that’s about it.

I believe I have a case for tribunal. Can anyone please advise?