Thanks for the advice!!!!
I think i have a solution. I have a lander about 10 kms away from the rocket, (which btw is a prebuild stock "Munsplorer") and it has 3 crew slots.
What I did:
fly the munsplorer 5 kms closer then EVA jetpack the rest. so I got to the lander.
Now I have a rocket in orbit with more than enough fuel to get back to kerbin. All I need to do now is rendezvous. the problem is I've never done a successful one. For me they usually end in catastrophe and explosions (or just huge misses)
Also I wasted nearly all those 736mps of delta-v on the moving the munsplorer so no fuel left in that