Then put on your big girl pants and have the difficult conversation. Having to come ask for help on something so trivial is hilarious.
Here’s how you approach him. He’s a guy so we need things bluntly spelled out for best results. Tell him gifts are supposed to make you feel special. Gifts from your significant other are supposed to make you feel extra special. There is nothing special about getting the same type of gifts that he also gifts his mother. That’s not special at all and comes off as inattentive. And to prevent hurting his feelings don’t tell him you dont even like heart jewelry, just tell him you have enough and would like something different.