Potty Training

Omg help meeeeee lol I been trying to potty train my 2 almost 3 year old (in the next few weeks) for the last couple of months. When we had my daughter I had a c-section and it definitely paused the process for a bit. Any tips or ideas? He continues to go in his pull up even after constant reminding and when I do sit him on the potty he just won’t go lol he doesn’t have a schedule of going like most kids so it’s tricky to know when he has to go.

Thank you!