I think that I process much of the session throughout the week but sometimes I make a mental note of something I need to work on specifically and that is what I deem my homework.

I suppose if you wish to cancel your couples session that you could but it would need to be a mutual agreement with your husband. However, your husband may have some thihgs he wishes to talk about in there and ..... why is it that you are not working on what you need to for there. Avoidance, no time, anxiety, change of heart, uncertainty. What is going on? Maybe fodder for conversation. However I do not have couples experience.

Although your T seems to have too many clients at times he has planned time in his schedule for you and is depending on your attendance and your monies for his practice. If you cancel it would be nice if he had time to replace you in his schedule. That is just my financial consideration side. OTOH... being that busy he might like some free time...lol...

(Maybe I don't actually want the couples session to be "productive" until I know what I want to be the outcome? And more processing on my own and discussion with my husband is needed to know the desired outcome, rather than time in therapy with husband and T? So it seems like maybe it would be more fruitful to have the session later?)

Well, that is indeed significant. Can your T assist you with any of this or do you wish to handle it on your own?

I think all of these are good questions for your T.... and what he may wish... Each T may do it differently. Couples might run a bit significantly different.