Please feel free to contact me here (or ping me) at any time. In fact, it's often the best way to get my attention; due to my time constraints, I try to minimize the size of my watchlist and clean it out semi-regularly. For the same reason, I may also edit without checking my watchlist, defer my responses on talk pages, silently leave a discussion, etc.
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I keep a large offline database of sources and quotes for articles I work on, far more than any one person could use, so you're welcome to ask me about them if we’re working in the same topic areas. I may also have already added pre-formatted citations on-wiki, e.g. here, although these may not be fully updated.