flap to tap physics help please?

has anyone played spyro dawn of the dragon here im trying to explain something but im really bad at scripting so if i dont find a way il just do an animation i guess but i want to have it so the character does a flap when you press spacebar and theres an infinite amount of jumps
if i some how find it possible it would be great like in dawn of the dragon the first two flaps would be a jump and the third with less gravity (and sloowly float down unless you press spacebar again) i hope this is making sense but im going to add another game into the explanation trove but with less gravity on the 3 jump and onwards

[img]https://orig00.deviantart.net/801d/f/2017/261/1/b/tap_to_flap_by_eener9lilly-dbnsmib.jpg[/img]

https://eener9lilly.deviantart.com/art/tap-to-flap-705094643?ga_submit_new=10%3A1505730177