At 3 months, my STTN baby decided sleep was overrated. I thought that was the worst (waking up every 2-3) but he had me rethink that with the recent addition of not wanting to go to bed until close to midnight. Yeah, it has been over 2.5mo now. Good luck! Hopefully your LO will do like most and be over it in less time.
Re: I guess this is what you meant by 4 month wakeful