my beautiful six month old is changing

My Little Boy has been a beautiful sleeper, from day 1 he would only wake up for a bottle once and he started to jot wake up at all at four months old.

But now :( he is up every 30 minutes tossing and turning and then crys and screams and I know he teething bit I'm exhausted!!

I also have a two year old daughter who doesn't nap during the day anymore so I don't get to rest at all! she starts daycare in two weeks and sad to say but I'm excited to have some rest :(

I miss my sleep and I don't know what else to do to comfort hik at night :( any suggestions on what is the reason he is doing this besides teething