How long are you staying awake for when you do your WBTB. If its too hard to fall asleep again, you could stay up for a shorter period of time (i only stay up for like 5 minutes)

And go to bed earlier to prevent your parents waking you.

Taking a long time to fall asleep doesn't necessarily mean you wont LD either. Sometimes, itll take me 45-60mins of agonising tiredness....but i still have a chance of an LD