I can only share my own experiences, however helpful (or not?) they may be:
Josie, now 4, happily nursed till over 15 months. At the beginning we had a VERY VERY hard time nursing, and ended up bottlefeeding at night so my nipples could heal - she really wounded me pretty badly.
The day I finally gave in and gave her her first bottle of formula because she was losing weight and I just couldn't face the pain again that day, I remember the look of peace and gratitude on her face, and I remember the relief I felt being able to feed her at all, even if it wasn't nursing and it wasn't even breast milk. She was a pretty slow nurser at first too, but we got the job done, and around 3 months feeds began to go much quicker. She took to solids well, but still preferred to nurse most of all, and even gave up bottles for good around 8 months. (no more babysitting!
)
Natalie, on the other hand, was a great nurser from the get-go. I always felt like I had enough milk to feed the whole neighborhood (had there been any other babies who needed it LOL), and she'd be FINISHED and full in 5-10 minutes TOTAL. She REFUSED to take a bottle, which made it pretty hard for me to get away for any length of time. One day we offered her a cup with a straw and she took to that so well that after a couple days she wanted nothing to do with the breast any more. Didn't matter that it only took her five minutes to feed - it only took HALF a minute to drink 6-8 ounces through a straw.
This was at just before 11 months (about a month ago that we first tried the straw), and my supply finally went away. I was kind of bummed, because things had started out so well with Nat that I was sure we'd be nursing long-term, but she made up her mind and there wasn't a darn thing I could do about it. (Stubborn little Taurus! LOL) At this point I have to look on the bright side: she doesn't NEED to have me around to be fed or have milk, so I can actually spend some time away or DH can take her to visit his family and leave me with Josie for quality time (or take them both! LOL
); I can take allergy meds again w/o worrying about their effect on her; I can overcaffienate without worry too; no worries about watching which foods I'm eating that might upset her tummy.
Do I miss being able to just bare a breast and pop her on when she needs some comfort? Well, yes, I still DO miss that a little, but at the same time, I have to realize that Josie nursing for so long was part of who SHE was, and this is who Nat is, and no amount of wishing is going to change that. She's still a Mommy's girl, likes to snuggle with me at bedtime and naptime and runs to me for hugs when she's hurt, and if I obsess over the nursing thing then I'll miss the sweetness of all the other snuggles.
I guess what I'm trying to say is that feeling guilty is certainly natural, but while you might not be able to change your DS's preferences, you CAN 9eventually) change the way you react to the situation. If he has decided not to go back, you may or may not be able to change his preferences, but if his assertiveness is part of his personality then you CAN still embrace that and love it. You can certainly pump for as long as your supply lets you and save it for him in a bottle for the caregiver; that way if he never does go back to the breast, he's still getting your milk for as long as your body will make it. Many moms don't nurse for as long as you have; some never nurse at all, some make it longer, and their reasons for each choice vary by family and by mom and by baby. You've made it this far, and you can keep trying, but give yourself permission not to beat yourself up if he prefers the bottle. You're doing the best you can as his mom, and nobody in the world can find any valid fault with that.
{{{{{HUGS}}}}} to you!