Our 3.5 month old has become extremely alert and interested in the environment around her. Last week, we dealt with a nursing strike because she would melt down every time you tried to feed her. I am guessing it was because she didn't want to stop what she was doing to eat. This has since resolved itself, but it is still hit or miss if she will eat without a tantrum. This week, these meltdowns have transferred into bedtime/naps. If she even suspects we are trying to get her to sleep (eg. Take her into a darkened room, sit on a glider, put her into her pyjamas) she will start crying hysterically. Her last nap took 1.5 hours to get her to go to sleep and typically she will only nap for a maximum of 45 minutes. We try to catch her sleepy cues early and try to have her nap every 1.5-2 hours (depending on when the first yawn was). We've tried baby wearing, bouncing on an exercise ball, white noise, taking her for walks/drives, but nothing seems to work consistently. Even nursing her to sleep only works half of the time. Has anyone else experienced such sleep resistance? I am assuming some of it could be due to the 4 month sleep regression starting early. We are contemplating trying sleep training, but are worried she could be too young. Any advice or similar experiences would be helpful!