Summer is here soon, so get practicing before you get back to school. When I used to go back to school after summer holidays, my classmates always changed somehow: some changed for the worse and some for the better. My point is that I expected changes after summer so this is an ideal oppurtunity to change and perfect your dastar - and impress your mates when you go back to school. When I first wore a dastaar I practiced it evey day of the summer holidays as I wanted it to be perfect and to tie it in a reasonable amount of time each morning. Come september of that year and I forgot that I was wearing a dastaar for the first time to school since I was wearing it for the past 4 weeks non-stops whilst going shopping, gurdwara, trips, cinema, and at home.
I have no doubt your mother will support you if shes always thinking for your best. Most parents are usually overwhelmed if their kids are inclined towards sikhi and often want them to surpass their achievements