Error in workflow Running

Hi everyone, I have a workflow which connected to cron trigger and in the workflow i have loop inside loop i have custom node .The custom node logic is it receive the url from loop and make api call to the url and fetched courses then enriched AI content in it and then save it to supabase. But the loop has 2.5k elements and each api call give me an average 500 courses. The issue is now that the workflow trigger and processes the courses from few pages and insert it into supabase too but after 15-20 mints the workflow stops. I put delays too where necessary to overcome rate limits of OPenAI and MapAPI.