Room sharing help

We just moved my 7.5 month old and 2.5 old into the same room. Help! I'm not sleeping.

**This was our old normal

Toddler

Wakes at 8

Nap 2

Bedtime 8

Baby

Wakes 7

Naps 10 and 2

Bedtime 8

(Wakes up around 3-5 times a night, this is an improvement for him)

What is happening is Baby is waking toddler up in the morning. Toddler is having meltdowns all day now. Toddler won't nap early or normal time, just refusing naps all together. Then waking the baby during his naps. Bedtime the toddler is waking the baby up. Baby is waking up once at night but is now waking up the toddler.

I've got a toddler now refusing naps getting up too early and both toddler and baby are exhausted all day. Plus I'm still up all night with baby. I'm getting no help and no break. Help. What's the secret?