First of all he cannot give power of attorney to anybody to reperesent on his behalf. Court has rightly turn down his power of attorney . He has to personally present himself for divorce proceedings.
The second motion should be made after 6m but within 18m from the date of presentation of the petition. So, the second motion can be made at any time till the expiry of 18m period. The second motion is to be made by the husband and wife jointly. There can be no exparte judgement in mutual consent divorce.
If you suspect that he may not appear on his own then, it will be better if you be in touch with him before the date of second motion and talk to him about it, so that he'll come without fail. If he is unable to attend the court due to some reason on that date then, take a short date of his convinience after discussing with your lawyer. Second motion can be moved at any time before the expiry of 18m from the date of presentation of the petition. But if both of you do not make the second motion within the prescribed period, then your Mutual consent Divorce (MCD) petition shall be dismissed.
Though the court sees that your husband is not present on any of the dates, there cannot be any exparte judgement in MCD. The concept of MCD itself is that the husband and wife mutually consents to dissolve the marriage and this consent should be shown in the second motion also till the decree is passed. If your MCD petition gets dismissed then you can file petition unilaterally under any other ground if available to you.
