Hun you are doing a great job but I aggree with all the others that she needs to feed more frequently which in turn will increase supply and her output.

60 grams is not much off a loss could be wg of a wee or poo but would expect her to be putting on at least a small amount of weight.

She should be having 6 - 8 wet nappies in 24 hr period.

keep up good work

xoxo