I bath and change them both and dress them.
Will dress DS2 on bathroom floor while DS1 plays in bath. Take him out let him crawl nude to bedroom put DS2 on his floor then dry and dress DS1.

Come to lounge for a while then depeding on DS2 sometimes settle him first or put him on floor to play and kick and then put DS1 to bed.

DH works a lot of long hours and does go interstate a bit also

Good luck its hard work but not too bad!