I am frustrated. Is this going to get harder and harder???

My LO is almost 3 months old. It was hell going through the NB stage, but after that I thought we were back to normal (ie. I have time to take a shower, brush my teeth, and even sitting in front of the computer when he naps). He sleeps through the night (7pm-ish to 6am-ish) since he was 1-2 months old, getting up only once for the past weeks, and for a few nights he even skipped the feeding altogether. He was also the breastfeeding champ and there had been no issues since the first NB hurdle (we saw a lactation consultant immediately back then).

However, now he fusses in the late afternoon hours when we go out so basically we can't really go out anymore. He also fuss when we put him down for the night - tonight he passed out for half and hour and wakes and cries on and off for 2+ hours! Then for the previous 2 nights he got up at odd hours and last night he got up twice to feed. Then on breastfeeding he gets distracted and he eats 2 oz per feed, driving me insane. We used to go to the park on the weekends and feed there but with his erratic feeding behavior now I just lost my confidence in feeding in public. I am not even thinking about teething yet. Sigh.

Is this going to get more difficult? I hope I am not getting a child that is like those crazy ones in Super Nanny.... What else is down the road that I should watch out for?