Saying "no"

I am a firm believer that you should treat a specail child just like they were normal. Now i've been telling kadyn No on some things in a stern, but not very mean vocie. Just so he can tell the difference between things he can and can't do. So what can a child who can barely do anything need to be told no to. He has this thing where he grabs the nipple of the bottle and squirts milk everywhere. Whenever i see him do so, i take the bottle away and say NO. I think that its not harsh of me to teach him not to do such a thing. I will take the bottle away for a minute then give it back, i will put it in his mouth, so he learns that the bottle is not for playing. My mom on the other hand says i should give him abreak that he doesnt know any better. Well when we are all babys we dont know any better, we are taught disapline. its not like im smacking his hand or anything, i wouldnt do that to him, even is he was "normal". I dont see anything wrong in a firm NO when he is doing something that he isnt suppose to. It may take awhile but eventualy he will learn. HE is a smart boy, and he will learn, when i do this, mommy has a not so nice vocie, and i get it taken away, so if i dont do it, i can keep it, and drink it. He will, it may take awhile, but soon he will be broken of that. I put his medication in the bottle becuase one is a pill, and has to be crushed so he needs to be broken of this. I dont see anything wrong with me just saying no, and taking the bottle away from a min or 2. I feel bad yes becuase it breaks his heart and he crys, but if i were to give in thats giving him permission to do such a thing. I cant ahve him squirting his milk alll over the place. Its messy and when his med is in it thats means he doesnt get his full dosage, which means hospital trips for my little dude. I dont want that, so im just trying to help him break this habit. I dont know. What do you guys think? Am i being harsh telling kadyn no and taking the botle away for no more then 2 mintes? Of course new moms usually seek the advice of thier mothers, but my mom has no clue what i go through, or anything or what its like to raise a child with specail needs. Dang, im still learning how to do this.

PLus his therapist already say he has a behavoiral issue, because there are things he can do, but refuses to do them, like transition into a sippy cup, he has drank from one before but he refuses to do so again. He can eat from a spoon he has done it before. but refuses to do so. LIke sometimes he wont hold his botttle. he knows how to do so, but just doesnt want to. They told me when it comes to those things, to not give in. That its okay to miss a feeding because he wont drink from a striaght nipple, well when thats all he does is drink how is it okay? Its not okay in my book, because thats where all his nutrition comes from. Anyways. I am going to try to nap, kadyn is drifting asleep next to me YAY