I always change the bag first thing in the morning before having even a sip of water.
After removing the old bag, I cover the stoma with a couple of 4x4" non woven sponges
brand Dynarex from Amazon, just in case there is any leakage. The key is to have everything
staged and ready to go before you remove the old bag - have the ring fitted in the new bag,
sponges separated, glue remover pads ready to use and skin prep ready to use with all the
little bags already separated. I am a big fan of these sponges because they do not release any
lint or filament which might compromise the adhesion. Train yourself to stage everything ahead
and make the process fairly quick, no interruptions by spouse, kids or pets. This is YOUR time.
Practice will make you faster.