“I usually end up almost doing my son’s homework for him. This makes my husband very angry. it causes conflict within our family. My son (11) is bright but I do admit he is often lazy. What should I do?”

Divided attention!
Without desiring to insult or offend you, or any parent, I’d suggest that your behavior possibly suggests you are overly involved with your son to the point of neglecting your own well being. Healthier parenting, in my opinion, would offer a child divided attention (I did not really mean “undivided”) given that the sooner children take full responsibility for their own lives, the better life is for everyone in the families.
(Papers edited me, thinking I must surely mean UN-divided attention).