Soft brake pedal after sitting

Looking for some advice on where to look or what to replace. I recently replaced rotors pads and calipers on my 2010 trd sport. After bleeding, brakes were good. Here lately, after sitting i have to pump them to build pressure back up until the next day. I'm going to start with a another brake bleed but any tips would be appreciated. Thanks.

 

Could just be low fluid. After the last bleed did you pump the brakes and top it up?

 

Someone else recently had the same problem.

https://www.tacomaworld.com/threads/brake-woes.826475/#post-29642544

 

Probably a master cylinder. But check the rear brake shoe adjustment

 

Thanks guys!