I have 2 bottle calves that I have been bottle feeding for 3 months I do plan to wean them in the coming weeks but I have a concern about 1. She has always coughed some after taking her bottle I felt like she drank it too fast. As she has gotten older she coughes more after her bottles now to the point she stops drinking and stand with her mouth open breathing heavy for a bit then she will be ok. I called and talked to a vet tech she told me that I should try a nipple with a smaller hole and thought that would fix problem. So I tried that last night and 1/2 way through bottle I thought it was helping but then she started the coughing again. My concern is I was told it could cause pneumonia so that really concerns me. I also tried to feed them milk out of a pan the one with the problem wouldn't drink it out of pan. Any ideas on what I should do I am stumped? Also both calves have access to hay 24/7 and grass and I feed them calf grower twice a day. Problem is they sometimes they eat all there feed some time hardly any. Is there anything I can do to get them to eat grain better? If I do wean sooner than later can I sprinkle the milk replacer over there grain? I hate to waste it. Thanks any advice would help.