It took me about a month to have barspins fully on lock. Took a little more than two weeks to get whips flat for the first time and it took me one night to learn FS 5050s.
i progress super slowly. took me 8 months to get tailwhips, 5 for barspins, a few months for 360s. after that, everything else just kind of came over time.
then again I didn't have anyone to show me what i was doing wrong, or how to even do them.