Help me figure out my investments

Hey folks, I've landed a new role (with a decent raise over my previous earnings) It's a permanent WFH role, so I'll be moving back to my hometown (tier 1 city) to help my parents for retirement. Age: 25. YOE: 3 I currently have somehow saved up ~4L. The breakdown is as follows. Index fund: 2.47L Savings: 12k (had to take out a bunch for some family emergency during my notice period 🫠) FD: 1.4L (to help with my brother's education) My monthly in hand at the new org will be around ~80k I know my initial goals will be to increase my savings, get health insurance for myself (and potentially life insurance) Other than that, my expenses for each month will vary based on the set up costs required to help in my parents' retirement. I'm guessing 40-50k a month will be going towards this set up cost, but only for a few months. But I'm going to equally start saving up and getting a health insurance myself. My main challenge comes on what to do after that. How much do you think i should save per month? How much should go into investments? Etc etc. I'll be more than happy to share any more details with y'all.