Ok dude if you just have a period of 5 weeks and then take the time to fix this I would Google Olympia labs that will find a Dr and script you a product called trimix. You inject it into the side of your dick with some slin pins and its instant erection. You have a script for it for peace of mind when traveling but just dropping all this stuff is dangerous as others have stated. You can't just drop 5mg of valium, I would not cut any dose in half that is prescribed by your Dr. without them telling you first.
There are sponsors here that sell a product called pge-1 that is in Trimix and I have just given them a shot but it seems to be a single use vial. Like when its reconstituted you use what you need to immediately and then discard the rest as it degrades pretty quickly, at least that's what I have found refrigerated or not but that is a route you could go as you have time to get it. I tried some from India and they come premixed in ethanol and you add 4ml of sodium chloride to the bottle but that's still %20 alcohol and you don't want to inject that. Ask me how I know?? lol please don't
I actually am in a very similar boat as your self, I am 46 5'11" working on getting my weight under control and that's actually been going pretty well, on ssri's, benzo's, beta blockers, I don't get off everytime I have sex, or even jerk off, my libido is poor but its either that or crippling anxiety for me. I mean you are on these drugs for a reason and if you just stop all of them you don't know where your gonna wind up but I guarantee its not going to be in the spot you want in 5 weeks. You probably can't even get in to see a urologist in 5 weeks. I will say I ran some tren/mast/sus/prop and that turned me into a sex addict. Which was a nice change. Also other have mentioned products to use as well, I am not an expert but if I could just take some ment and boom libido, I would.
In short you need these medications, and I posted this to focus on getting past the vacation and then see if a urologist can do anything for you. You are not the only one to experience this, its actually pretty common. You DO NOT want to drop all these meds in 5 weeks and then just be somewhere where you don't even know if there is a support system in place to help you should you have some sort of break from reality. Fucking crazy in the Philippines is not what you want and I am guessing you are traveling alone?? DUDE THAT IS A HUGE NO, DO NOT DO THAT!
Also if you need this stuff you need this stuff so maybe your only option are additional bandaids, It sucks but it is life. I would still see a urologist when you return! And keep us posted. Hope this helps.