Me and my partner are planning to have a date night on the weekend and have arranged for his mum to babysit. We will leave at 7pm ish and be back for 12am. My LO usually sleeps through the night no problems but recently he has been waking up once or twice. (Teething :( ) My question is should I be letting someone babysit while there is a risk he could wake up? Or do I wait till I am 1000% sure he will sleep through?

My LO is 6 months old x