This is a major surgery and can take up to a year to heal fully. Of course, the first few weeks are the worst so you shouldn't push yourself too much. I was told to walk, walk, walk. I started with a walker , then a cane or a friend’s arm, and soon on my own.
I’m thinking a recliner was not advised when I was recovering from my L5-S1 and then L4-5 fusions. Something to check with your medical team about. I laid in bed or on a couch, on my side, generally with multiple pillows. I also did lots of ice packs.
To ease the constipation you can use stool softeners (with or without a laxative. ) There is a medicinal tea called Smooth Move which can help. A magnesium supplement such as Calm, is good to use for regularity.
I’m concerned with your reference to foot drop. Was that present before the surgery and the surgery was to help relieve the nerve impingement causing it? Or did that foot drop start post surgery? I would definitely want answers and a plan from my medical team on that.
Recovery from this surgery is tough so expect slow progress. I had to start gabapentin a couple weeks after my fusion when I started having nerve zaps. Doc said it was my nerve coming back to life.
Hang in there but push to get some answers and tips from your medical team!