You've gotta keep them at arm's length. I would say not more than 3ish days per week, TOPS. Which shouldnt be a problemt if you're spinning other plates and improving your body, mind and career. Girls are always gonna push for an exclusive relationship after so long.
As for texting every day..that's tricky. Personally, i didnt even like texting my LTR EVERY single day. Don't respond much. and if she calls you out on it, tell her that you're not a big fan of texting all the time. You don't like to be tethered to your phone and would rather just use it to make plans