Hi Bronz,
We flew a couple of times with our young baby, and I was also quite stressed. (It was fine in the end...

On the flights there was also a lot of other moms with small babies. Try and give juice or milk with take off/landing, but my baby was fine even when she didn't want to drink with take off/landing. Take a dummy chain, as the dummy can fall quite easily, and it is emabarresing looking for a dummy underneath another ladies dress.
Ask if possible, if you can have an open seat next to you if you are flying alone, the extra space helps.
Ask a flying attendant for help if needed, they are normally very friendly with moms and babies.
I gave my baby a bit of panado as we got into the plane, just to calm her a bit, or maybe try some rescue remedy in her milk.
I think it is much harder to travel with a mobile todler than with a baby!