Hi, Micaela, when I change down a gear at speed I normally give the thottle a quick blip and change down and let the clutch out slowly,( that is the gear lever), then open the thottle, all at the same time, takes some practice but works ok, from 4 to 3, then 3 to 2, but never from 2 to 1 unless you are nearly at a standstll, practice makes perfect, Give it a go, where I live it is very hilly so you need to do this or you would never get out of 2nd gear.