So G-Fire-Flip, not G-Flower-Flip. https://rumkin.com/tools/cipher/rot13/
First, get all three stars you can normally get with plain Fire Flip which leaves you with the upper right star. Try not to accidentally fire stuff in the process.
By this point in the game, you have probably figured out there is no way to get to that upper right sector without Rot13(Trggvat ba n jnyy) There is no way to do that with fire or flip. Which leaves you with your other two powers. Rot13(Gung zrnaf lbh arrq gb qb fbzrguvat gubebhtuyl hapbairagvbany gung bayl tbng znxrf cbffvoyr. Nf tbng, lbh pna chfu abgrf, ebpxf, fgnef, naq cbjre beof. Gurer vf n jnl gb znxr guvf jbex, whfg fgneg ehyvat bhg guvatf gung qba’g jbex hagvy jung erznvaf zhfg or gur fbyhgvba, nf penml nf vg znl or.)
The solution takes a quite a few maneuvers to set up, so you might start to feel silly, but it takes less time to set up than G flower flip IMO. Also, you have a lot of options, so long as you don’t shove things into corners or fire by mistake.