Hi Linda , sorry for the grief you are going through.
Although the
Equality Act 2010 gives you protection it is a minefield to navigate ... there is no doubt that you will need specialist help.
It is reliant on the definition of Disability and definition of what constitutes reasonable adjustments taking into consideration various factors about your role and the company itself.
Have you given the NRAS helpline a ring as advised in one of your other posts?
It would also be worth calling
The ACAS helpline on Monday-Friday, 8am-8pm and Saturday, 9am-1pm: 08457 47 47 47. ACAS have been known to negotiate with employers even at an individual level.
Unsure as to whether you qualify for help via Legal Aid .. but there is a calculator
HERE and also a find an adviser link on that page .
See if you can get an appointment at a local advice Centre if you can, as what they are suggesting is discrimination . Since basically they are saying accept a change of contract with less hours or we will dismiss you due to your disability.Whether your request to work from home is a "reasonable request " will also be key.
If it were me i would call the NRAS helpline, call ACAS, Visit an Advice Centre , Check whether you can get legal aid .
EDIT :
EHRC Reasonable adjustments THIS IS NOT A SUBSTITUTE FOR QUALIFIED FACE TO FACE ADVICE.
Hope that helps a little and best of luck
Rich
"The difference between 'involvement' and 'commitment' is like an eggs-and-ham breakfast: the chicken was 'involved' - the pig was 'committed'."