One of the things a lot of dioceses guard against is the neophyte’s notion that because they’ve become Catholic, they ought to go on to being priests. It’s like a “honeymoon” period for a lot of people after conversion, and like all honeymoons, it ends sooner or later.
A lasting commitment to the priesthood can still be in the neophyte, however, so for those who feel it, I’d say stick with it, feel it out, look at it from different angles, take advantage of the sacraments, and pray pray pray. And if it all still feels right after the minimum period, see a vocations director.