I'm disabled myself, in the UK, where the government has already openly set its sites on killing disabled people (tens of thousands already dead in the past 13 years or so due to a deliberately nightmarish claiming system alone, never mind the defunding of our health and social care systems and the innumerable deaths that has lead to), and I can tell you that sadly your fears are well founded.

If you can, find leftist disability activists near you, and see if there is anything you can do to help (it can be anything from donating and spreading info online, to being present at demos and taking other direct action).

They aren't just going to leave us alone.