At My Wits End...

I've been exclusively pumping for a few months now, my daughter is 5 months old. The last month and a half, my supply has been steadily declining. I used to be able to pump 6oz from both sides on avg at every pump session. Now I'm lucky to get 2oz. She's now having to be given multiple feedings a day of formula.

I've upped the number of times I pump, upped the amount of time each time, I'm eating lactation cookies and seeing nothing for my efforts.

My job is relatively stressful, but not excessively so. My biggest stress is my lack of supply; I spend so much of my time pumping that I'm barely able to see my daughter during the week.

I feel like it would be more helpful to myself and my relationship with my daughter if I were to simply wean off pumping and switch to formula, but I also feel like it would be a big failure on my part. As is, I feel guilty for not providing enough food for her. They say breast is best, and I had every intention of breastfeeding for as long as possible for her... by the time I wean, I expect she would be about 6 months and she should be starting some solid foods. But will 6 months of breastmilk be enough?

Any thoughts or suggestions? Opinions on switching to formula?

I've never had so much anxiety about any decision as I am with this one.