(Concern) At what age is it best to get presbyopia correction if presbyopia has started?

I'm not very good at seeing, so I wear glasses.

But at some point, distant objects become clear, but nearby objects or when looking at the phone, they don't appear sharp and look overlapped.

I think I am starting to develop presbyopia.

You need to take off your glasses to see clearly when looking at your phone.

So, at some point, I started taking off my glasses when I looked at my phone.

It was very uncomfortable.

I just couldn't do it, so I got glasses with multifocal lenses.

It's been 3 days.

Because I have multiple focal points, I feel dizzy when walking or going up and down stairs, and if the angle isn't right, it feels like waves are crashing, so my balance isn't very good.

I'm really struggling with a lot of discomfort and want to get presbyopia correction, but I'm very curious about what age is best to do it, how long the correction takes, and whether there are any side effects.