Change in city. How to take care of him.

My son 16months old is having some issues since we shifted from Pune to Mumbai last week. It's been 5days and i understand that he needs time to adjust to new house, change in climate and surrounding and our family's schedule. I need guidance on how to adjust to Mumbai climate because we come from Pune which is a very pleasant climate. His issues as of now- 1. sleep and unscheduled sleep, once he slept at 5.30pm evening and got up at 3am early morning. 2. Eating- he eats barely 2meals each day and rest is all milk 3. Sweats a lot and is grumpy and never leaves me i have to be available and i have to look at him, I mean literally turn my face towards him all the time. I guess this is his emotional issue. But with no help available i cannot function like this. I need guidance on overall this situation and how to take care of him.