It sounds very much like your husband has sleep apnea. First of all, I want you to understand that this can be a potentially serious problem. Deaths have occurred during sleep from this condition (not to mention falling asleep while driving or doing other hazardous duties). He needs to have a sleep study and then to get a CPAP machine. This could save his life.
But to answer your question. Weight loss is a major help for sleep apnea. Also avoid smoking (or at least reducing). Avoid drinking alcohol prior to bedtime. Sleeping with a pillow under the neck so that the head is tilted back (this open up the airways better). Sleeping on the side. All of these can help, but please read my first paragraph (I understand that you don't have insurance).
Hope this helps and thank you.