Sounds like yu are doing a fantastic job and your little boy is so lucky to have such a loving mummy.
I'm sure once your DD is up and crawling he will make up his own mind to drop feeds. If you are looking after yourself I don't see that it really matters that he still has night feeds. My DD stopped night feeds at about 8 weeks. I have her in my bed when she wakes in the morning just so we get a chance to have those precoius cuddle times. They grow up all to soon. Just keep up the good loving. Great work!! Take care!