Help! LO won't take a bottle :(

[calex99]

I am sure this has been asked a million times and I am sorry for not scrolling through every page on this board to find them. Does anyone have any advice on what to to/try? My LO is 4 mos. old. Here's what I have done so far:

1. Playtex dropins
2. Playtex ventaire *he did take 2 oz one time
2. Tom Tippee
3. Breastflow
4. Mijumi Bottle
5. Medela calma
6. Nuk
7. Warming the bottle really hot
8. DH feeding

Please, please help me ! I am getting so discouraged and have to go back to work the Monday after Thanksgiving. Thanks a bunch ladies