I use the following C-grip technique to administer medication: https://www.youtube.com/watch?v=N12eJ5vdo4w
…. coincidentally, I used it a lot to administer Baytril, haha.

It is pretty common and enduring for a rabbit to always poop and pee on a bed unfortunately. It is soft, vast, and smells a lot like you, so it’s a very tempting target to mark, so having hopes of training it out of a rabbit is difficult. Behaviorally, you can make an attempt to constantly supervise whenever he’s on the bed and make an aversive sound or shoo him off immediately when he’s about to pee. The poops are sort of unpreventable unfortunately. I know some people put a litter box on their bed as a method of dissuading marking.

Unless you put a barrier or intervene consistently, he will probably continue accessing the dresser area. It would be wise to clear out the area, as that is a part of rabbit-proofing for a free-roam rabbit. To an extent, if you make the area “boring” or provide a different area where your rabbit can perch, he may lose interest in going up there.

Slide and shuffle steps are key when sharing and space with a rabbit, haha. Just keep tabs and don’t make sudden step movements. At the same time, be forgiving if you accidentally, gently, tap your rabbit with your foot. Admittedly, I have kicked my rabbit on accident a few times and since we had smooth floors, he’d slide into a nearby wall or door… but he’s OK since I kept my steps light and small!

Medication I can’t give much advice on, I just put his stuff on a thin apple slice and hoped for the best when he was neutered. If it takes a bribe I generally don’t worry too much with meds though, it’s temporary and in the grand scheme of things it’s better they got the meds.

I am lucky that Dorian doesn’t leave any presents on the bed, granted he only has visiting privileges to my room so I think he realizes this is not his territory? His bad habit is getting underneath and chewing the boards.  He does have issues with the couch, which I just fence off. Same with my larger houseplants. I did recently put the ones on my deck on tall stools, which actually ended up working brilliantly as he can’t hop on them or have anything real for leverage. He also has his own plants, because he is spoiled rotten! I have not had great luck in changing behavior, unless it’s to give him something he likes better. I sort of use the toddler method of rabbit parenting :D. Basically remove them from the thing they shouldn’t do and distract them with something they can do. Yelling and punishment really don’t work well in either case in my experience.