There is no limit to the amount you can make during the trial work period. If you earn more than $970 per month, then that month will be considered a trial work month. You are entitled to a total of nine months of trial work, and the months do not have to be consecutive. So, if you earned $1,000 in January, $1,200 in March, and $1,500 in June, you would have used three of your nine trial work months. Similarly, if you earned $20,000 in a single month, that could still qualify as a trial work month.