HELP PLEASE: Bp Wont feed

My royal has been off of food for 2 months now and is gradually loosing weight. He has no feeding response and has always been drop fed and was on medium rats. I've tried downsizing the food, exposing its flesh, feeding at night, feeding during the day, covering his viv, enticing him to strike, raising temps, lowering temps, feeding multis, feeding chicks.

He's a 14 months old bumblebee and has wobbles but that's never seemed to cause him any issues before.

He has various sized hides, his temperatures are 30 at the hot end and 25 at the cold, Humidity 60% and these don't fluctuate (hes eaten at these before with no issues).

I just don't really know what else to do other than take him to the vets to get checked out. I would normally just leave him to it as hes done it once before for a few weeks but he didn't lose weight that time and the loss of weight this time concerns me. Any advice would be appreciated.

https://ball-pythons.net/gallery/fil.../1/2/pan30.jpg
https://ball-pythons.net/gallery/fil.../1/2/pan10.jpg

Oh I forgot to add in info about his Viv.

Hes in a 3 ft viv and has one underfloor heat mat and one on the side. Water bowl and hide on his hot side, branches in the middle, fake leaves at both ends and a hide on the cool side (which he spends most of his time in).

https://ball-pythons.net/gallery/fil.../8/1/2/viv.jpg

If he's been fine up to now and is big enough to be eating medium rats, he may just be on a hunger strike because he's grown up and is more interested in finding a female than in eating. I've had males stop eating for six months.

I usually offer my adult males a small rat every two weeks and even those will refuse to eat occasionally.

If he was on medium rat there is no wonder he is not eating, medium rats are too big for a male, ideally you want to feed a small rat every 7 to 10 days.

When fed to much BP will fast to catch up and considering his size it could last a few months or even a year, do not offer alternative prey you may be stuck with, simply make sure your husbandry is on point and most importantly be PATIENT.

As for the weight loss not knowing how you weight your snake it may or may not be explainable, however if you are concerned have a fecal done.