I just racked my IPA to my first ever keg. It's probably at around 75 degrees I would guess. I didn't add priming sugar, just want to artificially carbonate this time. I initially put 15 psi on it. Is there any way to get *just some* carbonation within a few hours? Beer time is in about 6 hours. First time kegging so I'm a bit afraid to crank the pressure up too high.