How is mestinon supposed to help?

Hi all, recently been diagnosed with mg through achr positive blood tests. I've been put on 60mg mestinon 3x a day and I'm not sure how much it is supposed to help.
I have seen a great improvement in my eyes, they barely droop and they don't hurt from wanting to close all of the time anymore (though sometimes I do still get this), it has also helped with my breathing and the wheezing sensation (again, very minimal now) and i don't get the feeling of food being stuck down my throat as much anymore.
But I still feel an amount of limb weakness, I don't feel so heavy anymore when I'm walking unless it's a long walk, but i still struggle with repetitive movements such as brushing my hair or teeth, lifting water jugs, etc. I took my daughter out to london for her birthday last month, and it knocked me for a couple of days
Im completely new to all of this so im not sure what's normal for treatment and what isn't 😅