I am sorry to hear that you are feeling the way you are about your Dad.
I have someone very close to me, who can sometimes come across in the same way ..... but I have also come to realise that what he is actually trying to do is encourage me, rather than put me down, even though sometimes that's how it feels to me. Sometimes people don't seem to realise that tone of voice has a bigger impact than the words they choose to use to get their point across.
Do you think it's possible, therefore, that your Dad is actually just trying to encourage you, rather than put you down? I only ask because, to be honest, that's how it seems to me; the words do not seem so much as a 'put down' than they are an encouragement ..... but are perhaps coming across to you as a 'put down' or maybe even you could be feeling a little patronized? I know that I for one, cannot STAND feeling as though I am being patronized in any way, and find it hard to tell people that is how I am feeling. But if we don't tell them how we are feeling, how will they know that what they are doing is upsetting us?
Have you thought about maybe talking to him, and telling him how you feel? And that maybe while you're doing that, you could suggest some other ways of saying things that wouldn't come across quite as 'negative' to you, yeah?
For example, I had some severe trauma's happen to me as a child, and sometimes my partner would say to me 'You need to get over that" and him saying that just upset me even more, because I felt like he was just brushing it aside and not caring at all ....... so later on, when I was feeling better, I suggested to him that instead of saying that I needed to "get over it" that he could instead just give me a hug in those moments when I was upset, and then say something like "I'm glad to help" or "Glad you are feeling better now". Communication is hard, but not dealing with it is harder because it just builds up the pressure inside.
Anyway, I hope that helps at least a little?
Take care, I'll be thinking of you. xo