if i'm not giving my player skill points can i take them to the next season or will they go away??

i'm season 2 level 2 and want safe my skill points for level 3 and power train the first 3 day's i play 2 matches each day,still running for cup and cheampions league, and my team is better then the rest of my league (19.2) so i dont want to power train or give them skill point now. is this smart or have you a better strategy????

Thanks!!