Go with a schedule that is doable and comfortable for your baby
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My dd didn't go to 3 hour schedule till she was 4.5 months old. I had her on a flexible 2 to 2.5 hour schedule till she was able to last longer. I tried to extend it and fit her into a 3 hour one at the beginning, it didn't work, she wouldn't have it. Her naps were also short so it worked well together.
I don't really remember exactly how her day looked like at this age but:
I kept cluster feeding her in the afternoons, she definitely wanted this anyway. I fed her even every 1 to 1.5 hour before her bedtime when she was so little, later it was every 2 hours.
We had a dreamfeed, and for a while two dreamfeeds, one at 8 pm and one at 9:30 pm. However, from current perspective I am not sure this really worked. She kept waking up numerous times during the night anyway.
So yes, you can make it 2-2.5 hours, I know there are other memebers on this site who also taylor-made EASY. You can also do EAEASY when you feed just before nap but not to the point where a baby goes to sleep on your breast. You can change a diaper so nursing is not associated with going to sleep. However, your lo is so young, it is so hard to keep them awake after nursing, isn't it?
BTW, your doctor sounds like a reasonable person :lol:.