There's a vid somewhere by Erimus.
Basically if you get dropped by SC.
1: DON'T BOOST: you will gain 100m from the star corona (like an hair distance), but boosting raises your heat.
2: Calm down, out of SC you are not moving in any direction anyway. Left Panel: Fuel Scoop, Shields, Power Distributor, Sensor, AFMU, Planetary Hangar, power all down. Especially fuel scoop raises heat by loads.
3: Don't high wake (jump to another system) that kind of jump raises heat a lot and you continue to get heat DMG while jumping.
4: quickly push FSD button to see where the escape vector is, the cancel.
5: fly in escape vector direction but wait for temp to go back before pushing FSD button again.
6: low wake away
If you have heat sinks, one must be used to cool down the situation while you switch off all the modules, another one shall be used before you low wake away. Now that they can be used also in SC, maybe a third one is needed while you gain distance from the star in SC.
The escape vector is always in a good spot, ie it's never toward a close binary.