Oh Snowboarder my dd is exactly the same! She is 4.5 months, feeding every two hours (but it could actually be more often as the feeds are all blurring together in my sleep-deprived brain) and I am finding it tough. She also has a tiny jagged tooth poking through as well so that is adding to the fun.. But even with all my grumpy tired moments, when I see her getting bigger and stronger I feel really proud of myself for persevering with BFing. Boobs are truly great!
Yup. Google or search on MN for four month sleep regression. Big growth AND developmental spurt, so even if your baby wasn't feeding every 90 minutes you'd probably be having disturbed sleep anyway. Nice of them to bundle it all in together! This too shall pass.