How can I restore my energy I have a newborn who I’m up with all night every two hrs of course ,

But by the time morning comes I’m exhausted and I have a 4 year old who is every active and wants me up any suggestions on what I can do to get some energy no coffee doesn’t help me anymore lol 😂 how do u moms of more than 1 do this ? I’m still trying to adjust to it I get help when my husband comes home from work but that isn’t until At least 5 pm .