if your really that worried about it, then just set it too sleep, and wake it up when ever you want to raise bonding or play with it more. ( although that isnt the whole point of having a tamagotchi)
i do it when i go to school, it is better than the pausing, as your tamagotchi still grows when you do this. however, your not really raising the bonding or playing with it, unless you keep waking it up to do that