The short answer is no, you can not wait. You must stop grinding teeth as early as possible or you will suffer from long term damage for all your life:
You will tear on and wear your teeth to the point that they will come very sensitive and fixing it will involve unpleasant and expensive visits [...]

The most common way used to stop grinding teeth is the night guard. It may not eliminate teeth grinding but it will reduce the bad effects of it.
However, many people who suffer from severe teeth grinding tend to break their night guard and replace it every few months – a process which may be very [...]

Positive airway pressure is considered by some experts to help stop grinding teeth. The Cpap (continuous positive airway pressure) is ventilation used for sleep apnea.
You can find Cpap machines for about $130 and more but you must know that there is not enough evidence that Cpap may stop grinding teeth. However, it may reduce it.

Here are some tips you can use to stop teeth grinding:
1. Take a few deep breathes before going to sleep
2. Read 10 pages of a book just before going to sleep
3. Exercise – Start doing Yoga or any other Sport you like
4. Write a diary
5. Go to a psychologist
6. Massage your mouth and jaws twice a day
7. Hold a warm cloth [...]

Some doctors believe that Valium is a good treatment to help stop grinding teeth. However, the side effects of an excessive consumption of Valium may be unpleasant and most patients do not use Valium for more than a few weeks.
However, Valium is still considered a relatively good medication to stop grinding teeth for severe cases [...]