My 6 week old formula/breastfed (mostly formula) does not seem constipated, but has trouble getting his poo started. My mom suggested I use a thermometer or tip of a qtip to get things going. I lube it up and gently put just the tip in and twirl for a second or two. It works every time, once a day he gets it all out. Is this something I shouldn't be doing regularly? He will strain and strain for hours without the help, but his poop looks normal when it comes out.