When is the right time to dedicate 100% of your time to your startup?

Hi Elphas,I recently discovered this community and have learned so much from all of you - so thank you! I would love to learn from all of you on how to balance having a full time job while trying to grow your start up. For me, the answer has been trying to multi-task like crazy between work meetings to spend time on the start up, then work on my start up after my 3 year old son goes to bed and sacrificing on sleep. It's very exhausting, but I don't know how else to manage all three especially since the start up is still at a very early stage. Any tips? Would you recommend that I just quit my job and dedicate 100% time to my startup? If so, at what stage of the start up do you think it would be wise to do that?For additional context: - I currently work full time as a Director at a Fortune 500 company. My job is very demanding as it is client facing, with little predictability on my schedule, but it also pays well. - I recently launched a company to help working parents manage childcare and education during the pandemic. I would love for this to eventually be my full time job once there's financial viability to the product. - I have a supportive spouse, but he also works full time and have a demanding job. Thanks so much everyone!