Feeling like a failure

I feel like I have failed my son. He’s just under 15 months old and still wakes up multiple times a night. Won’t sleep for more than 2.5/3 hours at a time. He won’t settle unless he gets a bottle of formula. If it’s anything else he won’t go back to sleep. During the day he has soy milk (lots of allergies) and water but all in a bottle he still can’t figure out a sippy cup or straw cup.

He isn’t speaking yet also. We are a multilingual household so I’m told delayed speech is common but it worries me.

Physically he’s very advanced. He’s been walking since 9 months and can run and climb just about anything.

Mentally he’s very curious and aware. He’s great at following direction and he picks things up right away so no concerns there.

I’ve been trying to transition away from formula but it hasn’t worked and I have no idea how to transition from a bottle too!

He has his doctors appointment next week and I cry just thinking about having to explain all this. I feel like a negligent parent.