I have written apex class to auto approve step(except last and first step) of approval process if it is pending for more than 2 days, and I have scheduled that that apex class that runs every day and it is working fine.
Now if it got auto approved the next approval get an email that approval is pending for you. I am sending the email from approval process step only. I am setting comment of auto approval from code, comment like 'The previous step was auto approved'.
I need this comment to sent to next approval email? how to achieve    

I have written apex class to auto approve step(except last and first step) of approval process if it is pending for more than 2 days, and I have scheduled that that apex class that runs every day and it is working fine.
Now if it got auto approved the next approval get an email that approval is pending for you. I am sending the email from approval process step only. I am setting comment of auto approval from code, comment like 'The previous step was auto approved'.
I need this comment to sent to next approval email? how to achieve