I have some BTC asleep in my wallet doing nothing, therefore I want to put them in work to increase their value.
I've already looked into crypto trading but that requires spending much time reading about the projects to find good ones with potential and staying up to date with it, however my main concern is that I don't have much time to follow up on them :-/
Also thought about running a Loan service, however it takes as much time in validating the loans and keeping up with them, not to mention with my current trust it's highly unlikely to find a valid loan since they'd go for more trusted users.
My final thought was lending my funds to an existing loan service for a small return, which sounded good idea first... but I couldn't find a loan service that seems to be short on funds

Anyone got other ideas that will get me some revenue without having to spend much time following up with it? something set & forget for couple months (maybe check once every month or two)?
I think in your situation that you have much time to follow up or to monitor your bitcoin,i think there is no other way for you to earn but to hold your coins for a long period of time. Wait the time that bitcoin price increase more higher which you can earn as much as you want. In doing crypto to earn more are needs time and effort ,so hold for long term if you don't have enough time for it.