I think it can be very difficult to adapt to a totally different display of attitude (little aircraft rolls with respect to the instrument panel as in the Russian system) if you just get airborne and hope you can cope.
For me the secret was to sit in the bath before hand and visualise what it would look like. There I realised that it would look as if I was flying line astern on my leader and he was changing bank angle in front of me. He would look (against the real horizon) exactly how the Russian attitude indicator looks in the panel.
So what to do?
Answer; fly your leaders aeroplane from your cockpit. If you want him to level "his" wings just do what comes naturally and "your" wings will do what you want.