Boobie obsession

Soo my 14 1/2 month old has a recent obsession with my boobs constantly trying to take them out of my bra, play with them, or touch them or do anything with them.

She hasn’t been breastfed since 6 months old ( she weaned herself) and has been on bottles and is on full milk now

Is it normal for her to be tryinf again?? Cause I’m completely dried up and have no desire to start again