Saw the fg rekkie holder having trouble with this, so here's my method to get a consistent skip on this level:

I've gotten it 10 times in a row, and decided to record my last 4 attempts to give an example

Tutorial: This skip is very consistent if you do this exact method. Go to the left and hug the wall. Spew downwards in the middle of your character. Keep spewing till you have 40-45% ammo left in your bar. Then jump and keep holding jump. When you reach the apex of the spew, start spewing downwards for a final boost

Not sure how to make a guide, so I'll just post it in this thread

This is prolly known, but for IL's when it comes to bosses, it's always best to play with 60 FPS to hopefully get a tickback on the IGT timer

Tested this out on level 1-5 where I can get consistent 0:36 on 60 FPS, but I keep getting stuck on 0:37 on 30 FPS

Don't know if this is because of the Natalie Glitch that benefits from higher FPS, it's kind off hard to test out on the non boss levels if this is purely because of that or not.