iOS app Photo Pills (https://www.photopills.com/) to plan for Astrophotography.

As a full time employee (9-5 job) in an MNC and father of new born do you think it is still doable? How many hours do you have to dedicate on a weekly based?

PS: Already have a Bachelors in Computer Science

It heavily depends on the courses you pick. I'm a full time employee (9-5 job) but no family and I usually dedicate a hour or two of my mornings and early evenings to the course as well as a couple hours every weekend, but I pick what others consider to be the more intense courses (compilers, distributed systems, operating systems). I also go all in on these courses since you get out of it what you put in.

This site is very accurate when it comes to the hours per week breakdown on courses: https://omscentral.com/ You'll see that some courses are drastically easier than others, the more intense ones being more rewarding. In all, you can make it as hard or as easy as you want and pick your courses that way. Having the BS in CS (I do) helps since you may recognize some of these topics from undergrad.

I have a free drop box account and use it to store kdb file. What is a better alternate if I want to access to kdb file from more than 3 devices (combination of windows + ios devices.)

OneDrive, if you don't want to self-host. I switched from Dropbox when they added the device limit.

Syncthing

Syncthing does not require setting up a server. Your devices connect to each other directly, or through a relay if that's not possible.

Thanks.. Will give a try...