The reasons you brought up in your post should be enough for your psychiatrist to consider writing you a prescription for a long-acting methylphenidate alternative such as Concerta, which is supposed to be effective for > 8 hours.
For many people the long-acting forms of methylphenidate won’t be as effective (long-acting) as advertised, so considering a normal circadian rhythm they usually take some long-acting form in the morning and then a shorter acting form (such as Ritalin) in the afternoon / early evening to stay functional as long as needed.
P.S. Long-acting forms are often smoother when wearing off, meaning less of those unwanted side-effects like anxiousness.