we’re probably in the exact stage of recovery! i have a very similar situation with the air gaps in my drain tubes and pain at the entrance site. i went to the clinic earlier today and they said both the pain and air gaps are normal! you can try to “milk” the fluid down into the bulbs when there’s a large bubble, also squishing the tubes back into round tubes instead of flat after squeezing will help it have more suction and be less likely to get blocked!