Yes I would have said too, drop 1 diopter for a start – especially since the full minus isn’t giving you ideal resolution on the eye chart.
The cylinder drop is definitely an experiment. Might be fine, but could also end up challenging. If it’s cheap to buy get with and without, or if buying local ask the optometrist to let you try both with a test lens kit.
And try to limit media consumption at phone distance. 😉