You should send your passport and Medical payment receipt on March 5-6th visa TCS. They will get it the next day or so. Try to get your DMP to put you on call if someone cancels so this way you might get lucky again and get it done sooner. Regardless, send your passport and Remed payment receipt right after the Remedical. In my opinion, you shouldn't send your PCC as they didn't ask for either
It all depends on your Bring forward date, so lets say your bring forward date is 30 days after the date of the request letter i.e. March 21st, they will check for your medical results in their system and if Newdehli entered your medical results by then, they will stamp the Visa on your passport and send it back to you. It could take upto 2-3 months but in my opinion they will send you Visa within 45 days.