Improvement after eye test

I've just had an eye test where, to my surprise, the optician has said my distance vision, nearsight and astigmatism has improved so she recommends new lenses. I have severe myopia (-9 and -7) and wear varifocals all the time obviously. She said I have the beginnings of cataracts but nowhere near needing removal. My question is - has anyone else ever had a change meaning less strong lenses? And should I do what she recommends, given that I've struggled to adapt to new prescriptions in the past?
Obviously they're going to cost £££s but that's not really a factor - luckily.