How Do You Minimize Night Time Wake-ups?

Hi everyone,

My son has been waking up 5-7 times at night for the past few days and I want to know what you do to minimize night time wake-ups?

I try to see if he will soothe himself and go back to sleep but it just isn't cutting it right now.

He is 5 months and has always been a good sleeper at night, even while teething.