I think aiming for more feeds would be more effective if you can. Have you tried a dreamfeed at all? If there's a worry about weight gains then waking to feed in the night might even be an idea.
How many wet nappies does she have? Is she quite alert when awake? Any signs of dehydration?
What you describe is normal when supply settles down, so it's not necessarily a sign of low supply.
What I was going to say too

I would just try and get in a couple more breastfeeds.