If this is someone that you only see once a month, it may not be a good idea to keep dating them.
The lack of time together can cause a lot of emotional stress on a relationship that is often difficult to overcome.
However, if you still want to keep dating this person, you could make sacrifices with other activities that tend to take up some of your free time.
In other words, you may have to cut back on the amount of time that you spend with family, friends and hobbies, and apply some of that time to seeing this person more often during the month.