Shall I withdraw IN Process application and re-enter pool?

My pr (fsw) application is process since last year May ' 2017 ,With 446 CRS points(this year 441), My file is held up due to my non accompanying child's medical in process. With new medical rules (June 1 , 2018) I think my child will pass medical.

Currently, with over a over year of waiting , my gmcs notes shows Security not started and child's medical in progress.

Last year I filed with wife and child as non accompanying , thinking later I can file for them once I land Canada.

Now with delays, I am thinking about withdraw my current application and re enter pool and all 3 applicants(me, spouse and kid accompanying ).

Just want insights in this direction , Is it good idea to do this ?

Thanks.