Question about content releases (Patreon)

Friends, I need your opinion on a matter: I just realized that somebody can make a pledge, enter the patrons-only content, grab everything and just remove the pledge. I don't feel that's fair to the ones who will actually help with the project, so I'm thinking about sending the new comic pages only on the beginning of the following months (according to the milestones reached), to the ones who maintain their pledges until the end. What do you think about this? I'm still learning the ropes here, so I hope you don't mind if the rules get adapted as we get by. I'm all ears to suggestions. Thanks! -T.