My son started to wake at a teeny bit older than this, I will say this to your hubby - I gave him formula one or two nights because EVERYONE pressured me and I caved. Boy, do I wish I hadn't. Did it work? Not on your nelly. He started sleeping through again about 4 weeks later, when he would feed for maybe 1 min and fall asleep again. It had become clear it was a habit, possibly formed after a growth spurt, which they do have around 4 months, and us going away for 2 weeks all over the place visiting relatives. We would shhh him and pat him and after 2 nights of not feeding when he woke, he was back to sleeping right through and still is at 12 months.
I know, I really do, how intense the pressure is. You stick to what you think, but I promise that formula is not the magic 'sleep through' solution that your husband thinks it is. If it were, ff babies would sleep perfectly (they don't) and bf babies wouldn't (they do)
Massive hugs x x x
If the other EmilyB reads this, can I have my username back please?