FRLM to ilR but I m not living with partner in uk

[Phdswati]

Dear all
First of all I m not sure how to post and where to post, so if it goes somewhere it shouldn't, I applologize in advance.
I recently got flrm. I m married to British 3 years ago, have son who is British too, 2 year old. I m in uk for 6 years on student visa. Recently got degree on July and changed my status from student to flrm.
Now i got very good job offer in my home country plus I m missing home so I have decided to take up job and move there but my partner won't be joining me as he is working in uk. We have decided that either he or me would be coming Atleast once in 3-4 months to see each other. My son will be with me. I know if I m on flrm, I m not supposed To go outside uk more then 180days. But I'm talkin for more then a year. What would happen if I apply for ILR? Or is this right to apply on IlR or again flrm. Am totally confused.
Thanks for reading and suggestions.

[geriatrix]

See also Time spent outside the UK.
Given you intention to stay out of UK, you'll need to apply for (further) leave to remain or entry clearance as spouse of a settled person (depending on where you are where your current FLR(M) leave expires).

[Phdswati]

Thank you very much