Honestly once on the motorway it’s really simple.
I know you said you didn’t like it because it was busy but honestly don’t panic if it’s busy just flow with the traffic, you can stay in one lane if you want to because it’s busy - you don’t need to keep changing lanes especially if it’s really busy and you won’t gain anything by moving lanes. If you can and want to move past the lorries or real slow moving traffic in the slow lane then just lots of mirror checks and make use of the middle lane too. You can then swap back straight away once you’ve moved past them if the slow lane is where you feel comfortable.
As for traffic merging in if I see a merging lane coming up and I’m in the left hand lane I move over into the middle lane otherwise be prepared in advance to hold back, brake and let traffic in so you’re not slamming your brakes on.
I think the more you do it the more you’ll feel better about doing it and it’ll just be another driving thing you ‘just do’ if that makes sense.
I know you said you didn’t like it because it was busy but honestly don’t panic if it’s busy just flow with the traffic, you can stay in one lane if you want to because it’s busy - you don’t need to keep changing lanes especially if it’s really busy and you won’t gain anything by moving lanes. If you can and want to move past the lorries or real slow moving traffic in the slow lane then just lots of mirror checks and make use of the middle lane too. You can then swap back straight away once you’ve moved past them if the slow lane is where you feel comfortable.
As for traffic merging in if I see a merging lane coming up and I’m in the left hand lane I move over into the middle lane otherwise be prepared in advance to hold back, brake and let traffic in so you’re not slamming your brakes on.
I think the more you do it the more you’ll feel better about doing it and it’ll just be another driving thing you ‘just do’ if that makes sense.