You can add the months using the add_months method as follows:
select now(), add_months(now(), 2);
+-------------------------------+-------------------------------+
| now() | add_months(now(), 2) |
+-------------------------------+-------------------------------+
| 2016-05-31 10:47:00.429109000 | 2016-07-31 10:47:00.429109000 |
+-------------------------------+-------------------------------+