I'm in the same boat. My 12 weeks of FMLA are up after next week, and DS still won't really take a bottle. He doesn't mind the nipple in his mouth but he won't suck. We've tried Avent, Platex nursers, and the Breastflow bottle.
DD (now 8yo) wouldn't take a bottle either... she did know how to make it work, and would take 1-2oz at daycare (she was there for ~10 hours each day)... but then would nurse all night long until 10 months, when the daycare finally agreed to give her EBM in a cup.
Thankfully, DS will be staying with his grandmother, and she is 5 minutes from my work. So if necessary she will bring him to nurse. (I plan on going to him to nurse at lunch each day.) However, at least my mom will be willing to try alternative feeding styles if necessary... So far we've talked about eyedroppers (or straw with one finger over the end), cups and potentially an SNS on her finger (which he will suck on)
Good luck to the OP! I'll be watching this thread for more ideas.