I'm a month out and trying to figure out an exercise routine. I don't want to over do anything especially since I only get around 4-500 calories in am still struggling with my water intake. Any advice on a routine?

Walk, walk, walk. Park at the back of parking lot, walk the stairs instead of the elevator (even if it's only 2-3 flights at first), laps around your home...

Find something you love doing. Do you like to dance? Find a Zumba class. Do you like Water? Find a finning or aerobics class. Shop? Mall walking groups are so common!

Move your body towards a fitness goal, one step at a time. It's a marathon, not a race.

I agree with walking especially since you are likely not yet cleared for full activity. Stairs were not my friend 4 weeks out. But four months out I just signed up for Gentle Yoga, a Barre class and Zumba. I wish that I had started exercising more at about 3 months. In all honesty, even though I was cleared for full activity after 9 weeks, I really wasn't ready to do anything other than walking until at least 3 months.