How busy are you is IDP for ee students?

Hello, i'm an ee student about to finish my first year and for my first sem there are two courses i'd like to repeat but I can only repeat one during y2 s1 so i'm thinking of repeating my other subject during y3 s1 but I've heard most of seniors are just busy as hell T^T, so is the IDP during third year ee that bad? and should I avoid taking on any extra subject during that time?