I have found increasing fruits that are full of fiber helps, like apples and such. If you can, try to talk a walk, this really does help give the peristalsys a leg up. Try to get on a schedule. If a cup of coffee helps, then aim for the AM. Go sit on the potty, and give yourself a chance to relax, and let it happen. Make sure you are well hydrated.
The upper part of the intestine is all about adding water to your stools. makes it mushy, and it can draw all the nutrients out of it, the lower part is all about taking the water away. make it dry, and recycle that fluid. The better your hydration, the easier it is to push. Dry stools are hard to push, and the longer its in there, the drier it gets.
Miralax has helped many, but makes the opposite a problem for me. I use colace with a vegetable additive that really helps when I need it.
Even if you can only sit in your chair, and pump your legs, or do simple bends forward, and lean back, forward and lean back, it does help get those muscles going.
feel better.