Night Float? by yourself or with an upper level as part of a team? I'd be a bit concerned if you jumped out into that beast by yourself or without an upper level/attending in the hospital with you ---
but, assuming all is good and you live in a land of puppy dogs and kittens who playfully chase each other and butterflies float around near the dandelions ---- without Godzilla occasionally stomping Bambi (a la Bambi vs. Godzilla) ---
Right now, I'd be learning/practicing my admission H&Ps, know my standing order sets, brush up on IVF and the basics of hospital medicine -- I'd also look at ICU admission criteria for the various complaints -- and then take the time to look over the fundamental treatment algorithms for the most common admission diagnoses to the hospital (i.e. COPD exac, asthma exac, hyperglycemia, DKA, cellulitis, AMS, chest pain, SBO/ileus, CHF exac, FUO) and know WTF and HTF to treat them -- know your first line, patient allergic to first line and second line meds, usual starting doses, labs to draw, etc.
If you can get that down, do a reasonable PE, be relied on to finish your work without being told, have your work done on time, don't be a pain in the behind to work with and bring food and hot coffee to the call room on occasion, your seniors will like you and take pity on you -- which may earn you a good word with the attendings which can be important.
Good luck to you --- NF as the first one out of the bag --- mine was surgery but it was a skate month --community surgical practice and he was chill --- didn't learn crap but it was a nice way to start residency....