Family friends have twins graduating this year and have sent out graduation announcements (Not invitations to a party). Our own son graduated last year but with Covid he couldn’t have a party so I didn’t send out announcements so no one would feel pressured to send him a gift. These friends definitely knew our son was graduating last year but he didn’t receive even a congratulations card from them - which is fine. However now that we received these announcements I’m thinking they are expecting a gift. Can I just send them a congratulations card and not gift or am I just being miserable?