Changes

Bat 1: jump and whip the first bat and then move under it (or you can just walk under it)

Bat 2: jump into the platform close to it and take two steps then jump, the bat should fly underneath you

Bat 3: on the approach to the third bat's platform jump and throw a holy water to get the stop watch which we'll use in the next stage, walk under the bat

Bat 4: jump onto the platform close to the bat and after a step jump again the bat should fly underneath you

Bat 5: jump and whip this bat (note: this bat is named Dave, Dave likes to be a troll sometimes)

Also worth noting the feet of Simon do not have a hit box, so if your timing of the jumps results in any goofy fireball patterns keep that in mind and do not panic as some fireballs will go through the feet of Simon.