Can I handle all of this??

So, we continue to fight our battle with thrush (oral yeast infection), since Lincoln was 5 days old (he's now 4 weeks). Lincoln has been taking Nystatin for almost 4 weeks now. It was almost completely gone, just 3 little spots left, and now it's back full force. I'm also being treated with Nystatin since I'm breastfeeding. We've been sterilizing everything DAILY, washing EVERYTHING after one use, practicing careful hand hygiene, and I just started an acidophilus supplement. It is beyond frustrating. The nursing has been feeling so much better for me and hasn't seemed to affect Lincoln at all. We just bought all new pacifiers. I feel so bad for the poor little guy. He doesn't appear to be in any discomfort, but is definitely annoyed with taking the medication. So basically, breastfeeding has been a major pain in the ass. By the time I feed him (half of an hour), change/burp him (10 minutes), and then medicate himself and me (20 minutes- I have to clean and air dry my breasts, along with medicating) it takes a good hour-hour and a half for every single feeding. I get about 45 minutes-1 hour of "free" time between feedings. The night time feedings are tough. Since everything takes so much time, I have gotten a second wind of energy by the time I finally get Lincoln back to sleep. None the less, I'm exhausted!
On top of all of this, I'm struggling to fit the needs of the other 2 kids in, along with housework, and time for David. I feel overwhelmed and guilty. I don't want David, lily, or Logan to feel left out. I want to make time for everyone and everything. I'm hoping that it will all become easier with time, esp. after the thrush is healed and not taking up so much of my time. There are so many things that I want to get done around the house before going back to work in October, I hope I can find time for it.
As tough as it's been time wise, I LOVE it. I love being the Mommy to 3 precious little lives. They are amazing, precious, loveable kids. I wouldn't change any of it for the world, except i would love to be a stay at home mom :)
David's been working full time and trying his best to help, but it never seems like enough to me because I'm so overwhelmed. I feel so guilty for nagging him. He tries, he really does. I'm a perfectionist and a little OCD. David is the complete opposite, he's laid back and relaxed about EVERYTHING. There's also not much he can do when it comes to the thrush and breastfeeding, which have been the most frustrating!!
We'll see what time and practice bring!!!