Bronze 3 to gold in half a month would probably be pushing it. But I would hiiiiiggghhly recommend playing an easier jungler than nidalee, she's hard af to carry on. Very mechanical champions only look pretty to play, they dont really pay off until you've gotten comfortable enough with the mechanics that they no longer take your focus away from the macro of the game. But if you're dedicated to her watch sysbots stuff. He's legit the only nid main I know of that makes content atm.
If you really want to climb though, play the meta tanky initiater junglers like Sej, Rammus, Maokai and develop a good eye for when the time is to initiate fights. Focus more on ganking than farming, farm means little to anything but a carry jungler. Farming in the current meta is almost just a time filler, I've had my entire jungle respawn before going back into it in many games by 10 mins. Duo'ing with an ADC can be good, but in your current elo you probably dont know any good ones, so I would wait till you get out of bronze to worry about duo'ing.
GL