Do you have any conditions that affect your hand eye foot co-ordination?
If you do, switch to auto.
If you don't have any conditions, consider sticking with manuals.
What you could do is to buy the car you'd have after passing your test early. And then you driving lots and lots in that with an amateur instructor, eg your grandad. With the idea being to get pedal, gearstick, steering control into your muscle memory so that you don't have to think about the process of controlling the car.
Also watch a few car mechanic videos where they do clutch or throttle body changes and where gearboxes are explained. Understanding the mechanics of what goes on under the bonnet may help you to drive more sympathetically to the car.
For instance, did you know that once the car's moving, you can change gear without using the clutch at all? Clutchless upchanges are easier than clutchless downchanges, but both can be done with the right technique. Understanding and mastering clutchless gearchanges will make changing gears with a clutch seem like a doddle.
Different people have different rates of progress when learning to drive. The main thing is that you're safe in the months and years after passing your test.