As a Catholic, I can’t understand why anyone would be in such a mad rush to partake of Holy Communion without fully understanding what they’re doing. It’s not like we’re just having a snack of bread together as a symbol.
Latin Catholics (as opposed to Eastern Catholics) go through quite a bit of instruction before being allowed to receive Communion even if they have their first Communion as children, so it’s not like a convert is being treated differently. If somebody really wants to join then they should have the patience to go through the process. In the meantime, the person is free to attend Mass and participate in Catholic life of a parish, while taking instruction.
Receiving God in the form of Holy Communion is a privilege and should be regarded as such.
If someone’s spirit is so weak they don’t want to learn, then they’re a bad risk as a convert. They’re a bad risk as a cradle Catholic, for that matter.