HOW TO install lowering springs on a 2020 Mercedes W205 C Class

Installing EIBACH lowering springs on my car
Hello guys, in this video I'm installing Eibach lowering springs on my Mercedes w205, 220 D, its a 2020 model with 194 BHP
Eibach says its is 3,5 CM front and rear.
I got a bit less.
Lets see if we get there when the springs have some km/miles on them.
After 4 months an 12000 km the springs is set on 3 cm lovering.
Eibach spring set part number: E10-25-036-01-22 on Auto doc
Wheel info: GMP Stellar 8,5x19/ET45 on all 4, with 245/35-19