Is it okay to get someone else to pray for me?

Getting someone to pray for you does not eliminate any prayer responsibility on your part. There is a difference between mandatory prayer, like the Shema and Shemonei Esrei in Jewish prayers, and voluntary prayer. This Segula falls into the category of voluntary prayer. So, you can have any number of people (the more the better) praying for you at any time, and it doesn’t affect how much you should pray for yourself.