A couple of tricks for you.
First and most importantly, aircraft trimmed exactlt at all times.
The two questions for instrument flying are 'What am I doing now?' and 'What am I doing next?'
To change frequencies, just count the clicks. 122.20 to 119.65, for example is 3 clicks left on the outer and 9 right on the inner then glance up and check.
0.075's may vary according to your box but the result is free brain capacity.
Relax and enjoy it. Its a thinking game!
Dick Collins' book Instrument Flying Refresher is quite worth the read.