freeze the wave, don't let your enemy break the freeze, if enemy tries to freeze u must break the freeze
don't take too much harras and don't get dived. play safe early, take tp.
ping your jungler to take drake, also other lanes should win if you're gettning camped.
when i play fizz if i see that enemy has some aggresive early jungler i usualy take tp and just safe farm pre 800 gold and 2 dorans, then i just tp back to lane, kill my opponent with full combo and then just rotations are starting. if you're playing some imobile champ, for god sake GIVE UP some cs, don't take too much harras. flask is removed and nothing will give u sustain. just give up some cs, try to freeze and farm safely.