To sleep train or not??

I am desperate mom... my son turned one. But wakes up at least 3 times at night..I bf then goes to sleep. I tried sleep training but can’t do it anymore. He cried for more than an hour and I couldn’t do it. He has 2 naps during day total of 3 hrs not later than 4:30...I try to put him down to sleep at 8 or 8:30. What can I do? Am I doing anything wrong?