Replying to Spinning 540s

So I can do 360s pretty well of smaller jumps and am trying to work on the. Off bigger jumps but I want to try a five when I get more comfortable does anyone have any tips because I tried on today and I would just stop at 360 so then I tried surface swap 5s in hopes that it would help me and I ended up getting surface 5s but haven't tried a 540 since. Should I get more comfortable with 3s on larger jumps that are 20ftish of should I try a 5 on a smaller jump? I really don't know how to approach it.