For those of you who are new to Patreon campaigns, just prepare for a little bit of a disappointment on April 1st. It happens with every new campaign. A number of pledges are going to bounce, and Patreon will adjust the funding value accordingly the same day. This means the funding will seem to drop very suddenly for no apparent reason. Don't worry though, the pledges that were removed weren't real in the first place.
It's hard to say how much difference it will make, but if this were to happen today, you might expect about $1k to be removed from the total. It varies from campaign to campaign.